Answer:
HNO3 is the monoprotic acid and completely dissociate in water and gives the H+.
Dissociation of Nitric acid in water: HNO3→ H+ + NO3-
In NH4NO3 Ammonium is formed by a weak base and is therefore a relatively stronger acid.
Nitrate is formed from a strong acid and is therefore an extremely weak base.
Therefore the overall Compound is slightly acidic. The salt of a strong acid (HNO3) and a weak
Base (NH3) is acidic.
The chemical equations:
NH4NO3(s) → NH4+ (aq) + NO3-(aq)
NH4+ (aq) <==> NH3 (aq) + H+ (aq)
(The second equation favors products slightly due to the presence of NO3- continuously joining with the H+ ions and then separating again. This is what causes an acidic pH)
Explanation
Arrhenius Acids and Bases
1. An acid is a substance which dissociates in water to produce one or more hydrogen ions (H+).
2. A base is a substance which dissociates in water to produce one or more hydroxide ions (OH-).
Brønsted-Lowry Acids and Bases
1. An acid is a substance from which a proton (H+ ion) can be removed. Essentially, an acid donates protons to bases.
2. A base is a substance to which a proton (H+) can be added. Essentially, a base accepts protons from acids.
Acids that can donate only one proton are monoprotic, and acids that can donate more than one proton are polyprotic
So according to Arrhenius and Bronsted-Lowry Acid and Base concept HNO3 is the strong monoprotic acid
And NH4NO3 is the salt of Strong acid and weak base so it is slightly acidic in nature.
When in solution, ammonium nitrate will dissociate very well into NH4+ and NO3-. The ammonium ion is a Bronsted-Lowery acid in that it will donate an H+ to solution. In turn, this forms ammonia (NH3). Ammonia being a weak base will accept hydrogen ions from the solution, but not all of them. In conclusion, the solution will form an equilibrium where the pH is slightly acidic due to H+ ions being loose in solution.
HNO₃ is considered an acid because it readily donates H⁺ ions in water, while NH₄NO₃ is not considered an acid because its NH⁺⁴ ions do not significantly contribute to the concentration of H+ ions in solution.
When nitric acid dissolves in water, it dissociates into H⁺ ions and NO⁻³ ions. The presence of H⁺ ions in solution is what characterizes an acid. These H⁺ ions can readily donate protons, making the solution acidic.
When ammonium nitrate dissolves in water, it dissociates into NH⁴⁺ ions and NO⁻³ ions. However, NH⁺⁴ ions do not readily donate protons in an aqueous solution, which means they do not increase the concentration of H⁺ ions. Therefore, NH₄NO₃ does not exhibit acidic behavior.
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The density of aluminum is 2.7 g/ml what is the mass of a sample that displaces 50.0 mL of water?
Substances x and y are examples of which kind of molecule?
Alkali metals tend to be more reactive than alkaline earth metals because __________.
The molecular geometry of the pf3 molecule is __________, and this molecule is __________.
The molecular geometry of PF3 (Phosphorus trifluoride) is trigonal pyramidal and it is a polar molecule due to the electronegativity differences between phosphorus and fluorine atoms forming polar bonds.
Explanation:The molecular geometry of the PF3 molecule is trigonal pyramidal. The PF3 molecule contains one phosphorus atom and three fluorine atoms. Phosphorus has 5 valence electrons and fluorine has 7, so the PF3 molecule has 26 valence electrons in total. The phosphorus is at the center of the molecule, with the three fluorine atoms and one lone pair of electrons surrounding it. As a result, the molecule has a 'pyramid' shape with the phosphorus at the top.
In terms of its polarity, PF3 is a polar molecule. This is because the difference in electronegativity between the phosphorus and fluorine atoms creates a polar bond. The three polar bonds form a net dipole moment, making the entire molecule polar.
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The molecular geometry of the PF3 molecule is trigonal pyramidal, and this molecule is polar.
The PF3 molecule, which is phosphorus trifluoride, has a central phosphorus atom surrounded by three fluorine atoms. According to the VSEPR model, we count the electron pairs around the central atom, recognizing that there are three bonding pairs and one lone pair. Considering this, PF3 does not have a trigonal planar structure like BF3, which has no lone pairs, but instead has a trigonal pyramidal geometry. The presence of the lone pair on the phosphorus atom pushes the fluorine atoms down, which creates a pyramid-like shape rather than a flat plane. In addition, due to the differences in electronegativity between the fluorine atoms and the phosphorus atom, and the asymmetric shape of the molecule, PF3 has a net dipole moment, meaning it is polar.
Which are the intermolecular forces that can act between non-polar molecules?
Answer:
dipole-dipole interactions
Explanation:
i said so :)
This is a mixture in which two or more substances are so completely blended that is looks like one substance.
how have chemists helped fight leukemia?
a. chemists have created a vaccine to prevent leukemia.
b. chemists have created medicine to fight leukemia.
c. chemists study body parts that are affected by leukemia.
d. chemists take care of patients at the hospital with leukemia.
Answer:
The correct answer is option b, that is, chemists have created medicine to fight leukemia.
Explanation:
An individual who does research associated with the chemicals is known as a chemist. The chemist performs the duty to guide the individuals with regard to chemical compounds and the qualitative analysis associated with it. A chemist does a specific role of performing research associated with chemical compounds and the procedures related to it. That is, a chemist performs extensive research associated with the field of chemistry. Therefore, in the given question, the creation of medicines to fight against leukemia will be the correct answer.
How much ATP is produced from a single glucose molecule in each chemical pathway?
After each cellular respiration cycle there are ATP molecules obtained after oxidizing each glucose molecule
Out of which 2 ATP molecules are obtained from glycolysis cycle, 2 ATP molecules from the Krebs cycle, and about 34 ATP molecules from the electron transport system.
So, in all 2 + 2 + 34 = 38 ATP molecules.
1) List the number of protons, neutrons, and electrons in Carbon-13.
2) A fictitious element X is composed of 10.0 percent of the isotope X-55, 20.0 percent of the isotope X-56, and 70.0 percent of the isotope X-57. Calculate the weighted atomic mass of element X to the nearest tenth.
Please help with both questions and show all work!
Identify the elements in the second, third, fourth, and fifth periods that have the same number of highest-energy-level electrons as barium.
Answer:
The elements in the second, third, fourth and fifth periods that have the same number of electrons with the highest energy level that barium are beryllium (Be) magnesium (Mg), calcium (Ca ) and strontium (Sr).
Explanation:
The Electronic Configuration of the elements is the arrangement of all electrons of an element in energy levels and sub-levels (orbitals). The filling of these orbitals occurs in increasing order of energy, that is, from the orbitals of lower energy to those of higher energy.
There are 7 energy levels, numbered from 1 to 7, and in which electrons are distributed, logically in order according to their energy level. Electrons with less energy will be spinning at level 1.
Valencia electrons are the electrons found in the last electronic layer (called valence orbitals). This electrons allows to determine their location in the Periodic Table. All elements of the same group have the same number of valence electrons (This does not occur in transition metals). The valence electrons increase in number as one advances in a period. Then, at the beginning of the new period, the number decreases to one and begins to increase again.
So, in summary, those elements that belong to a group have the same number of electrons in their last or last layers, and the group number indicates the electronic configuration of their last layer, varying only the period of the element.
On the other hand, periods represent the energy levels that an atom has. That is, an element with five layers or energy levels will be in the fifth period.
Given this, the elements in the second, third, fourth and fifth periods that have the same number of electrons with the highest energy level that barium are beryllium (Be) magnesium (Mg), calcium (Ca ) and strontium (Sr). This is because they are in the same group (they have the same number of electrons in their last layer)
Write an equation for the neutralization of h2so4 by koh
which has a larger radius f or -f
Which of the following is equal to 3.5 liters?
How many grams of h2o will be formed when 32.0 g h2 is mixed with 32.0 g o2 and allowed to react to form water?
The amount in grams of water will be formed when 32.0 g H₂ is mixed with 32.0 g O₂ is 36 grams.
How we convert mass into moles?Moles from mass of any susbatnce will be calculated as:
n = W/M, where
W = given mass
M = molar mass
Given chemical reaction is:
2H₂ + O₂ → 2H₂O
Moles of H₂ = 32g / 2g/mol = 16 mol
Moles of O₂ = 32g / 32g/mol = 1 mol
From the stoichiometry of the reaction, it is clear that
1 mole of O₂ = reacts with 2 moles of H₂
So in the given question, oxygen is the limiting reagent as hydrogen is present in excess quantity & predominated the formation of water.
1 mole of O₂ = produces 2 moles of H₂O
Now grams of water will be obtained by using mass-moles equation as:
W = (2mol)(18g/mol) = 36 grams.
Hence required mass of water is 36 grams.
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What is a diagnostic characteristic of a mineral used to make a cement slab in your house?
Which theory changed because of the evidence known as seafloor spreading?
A. Continental Drift Theory
B. Mid-Atlantic Ridge Theory
C. Pangea Theory
D. Theory of Plate Tectonics
Water molecules are polar because the
Answer: Due to its shape
Explanation: Polarity of any substance can be determined by its shape. It can also be determined by its dipole moment.
It has positive charge at its one end and negative charge on the other end.It has one oxygen atom which has negative charge (being electronegative in nature) and has two hydrogen atoms which has positive charge.
Thus electron charge density present on the hydrogen is being pulled by the oxygen mking it polar in nature.
Matter that has a definite volume but no definite shape is a
a. liquid.
c. gas.
b. solid.
d. plasma. ____ 2. if you move a substance from one container to another and its volume changes, the substance is a
a. solid.
c. gas.
b. liquid.
d. solution.
Calculate the mass percent composition of iron for fe2o3 (hematite). express the mass percent to two decimal places.
If you add salt continuously to a glass of water, eventually some salt will remain at the bottom. why?
Final answer:
When salt is added to water until no more dissolves, the solution becomes saturated and a dynamic equilibrium is established between the dissolved and undissolved salt. The water has reached its solubility limit, and though individual salt molecules continue to dissolve and precipitate, the visible amount of undissolved salt appears to remain constant.
Explanation:
When you add salt continuously to a glass of water, you will eventually notice that some salt will remain at the bottom because the solution has become saturated. This is a state where the water cannot dissolve any more salt at a given temperature and pressure, meaning you've reached the salt's solubility limit. At this point, a dynamic equilibrium is established between the undissolved salt at the bottom and the dissolved salt in the water. What this means is that the process of dissolution, where salt dissolves in water (NaCl(s) → NaCl(aq)), is still happening. Simultaneously, the reverse process, where dissolved salt precipitates out of the solution (NaCl(aq) → NaCl(s)), is also occurring at the same rate.
The forward and reverse processes balance each other out, so the total amount of dissolved salt in the water remains constant even as individual salt molecules continue to dissolve and precipitate. That's why the undissolved salt seems to be at a standstill at the bottom of the glass, even though the chemical reactions continue. This phenomenon demonstrates water's ability to dissolve substances up to a certain point, beyond which the excess material forms visible solid particles due to the lack of additional solvent capacity.
An ideal gaseous reaction (which is a hypothetical gaseous reaction that conforms to the laws governing gas behavior) occurs at a constant pressure of 30.0 atm and releases 74.4 kj of heat. before the reaction, the volume of the system was 7.20 l . after the reaction, the volume of the system was 2.00 l . calculate the total internal energy change, δe, in kilojoules. express your answer with the appropriate units.
The total change in internal energy would simply be calculated using the formula:
ΔU = -P (V2 – V1) + ΔH
where ΔU is the change in internal energy; P is constant pressure = 30 atm = 3,039,750 Pa; V2 is final volume = 2 L = 0.002 m^3; V1 is initial volume = 7.20 L = 0.0072 m^3; while ΔH is the heat = -74,400 J (heat released so negative)
Therefore:
ΔU =-3,039,750 Pa * (0.002 m^3 - 0.0072 m^3) + (- 74,400 J)
ΔU = - 58,593.3 J = - 58.6 kJ
What begins to happen to radioactive uranium as soon as a mineral containing it crystallizes from magma?
protons, neutrons, and electrons all have similar masses. explain why this statement is false.
Density of 2.7 g/ml and volume of 35.6 ml what is the mass
What does the electron transport chain do to the concentration of hydrogen ions (protons)?
HELP ME PELASE!!! 14 points and brainliest to whoever answers it correctly first!!!
3. Study the following reaction carefully. What classification should this reaction have?
2Al + 3NiBr2------> 2AlBr3 + 3Ni
synthesis
decomposition
single replacement
double displacement
neutralization
A geologist finds a section of rock that shows was ripple marks. What does it he pr send me or a ripple marks say about the area where the rock formed?
A. the rock from rk s in a fast moving stream
B. The rock formed under Earths surface at very high temptress
C. The rock formed from mollusk shells.
D. The rock was blown out of a volcano
Which quantity is equivalent to 50 kilocalories ?
A mixture can be classified as a solution, suspension, or colloid based on ____.
A. The scattering of its particles
B. The size of its particles
C. The color of its particles
D. The total number of its particles
A sample of calcium carbonate, caco3(s) absorbs 45.5 j of heat, upon which the temperature of the sample increases from 21.1 °c to 28.5 °c. if the specific heat of calcium carbonate is 0.82 j/g·˚c, what is the mass (in grams) of the sample?
The mass of the sample of Calcium carbonate is 0.195g
The heat capacity formula,
[tex]\rm \bold{ Q= mC\Delta T}[/tex]\
Where,
Q- Heat absorbed = 45.5 J
C- specific heat capacity of [tex]\rm \bold{ CaCO_3 = 0.82 J/g/^\cdot C }[/tex]
[tex]\rm \bold{ \Delta T}[/tex]- change in temperature = 280.5 k
m - mass = ?
Solving Equation for m
[tex]\rm \bold {m = \frac{45.5 J}{0.82\times 280.5 K } }\\\rm \bold {m = 0.195 g }[/tex]
Hence , we can conclude that the mass of sample is 0.195g.
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