Inorganic Chemistry Answers

1.Calculate the pH of an aqueous solution of a 0.039 M HCI.

2. Calculate the pOH of an aqueous solution of .0.073 M LiOH.

3. The pOH of a solution of NaOH is 11.30. What is the [H*] for this solution?

4. The pH of a 0.02 M solution of an unknown weak acid is 3.7. what is the pKa of this acid?

5. What is the concentration of ammonium chloride in a solution if its pH is 4.80?

6. The pH of a solution is 4.80. What is the concentration of hydroxide ions in this solution?

1. Calculate the pH of water in a cloud that has equilibrated with SO₂(g) at a concentration of 1.0 ppm by volume.
2. A solution contains 2 mg/L CN^- and is at pH 8.5

• What is the concentration of HCN(aq) in solution?
• If the partial pressure of HCN(g) above the solution is 10^-6 atm, would HCN transfer from the gas phase into solution or from the solution into the gas, or is the system at equilibrium?

What describes the emissions of an isotope that gives off both beta and gamma radiation?

1. a mixture of positive and negatively charged particles
2. negatively charged particles and high energy photons
3. no particles emitted, only high energy photons of light
4. neutral particles and high energy photons of light

which of the option ?

What does adding a catalyst to a reaction do? Select all that apply.

1. alter the orientation of reactants in the reaction
2. lower the activation energy of the reaction
3. increase the rate of the reaction
4. increase the amount of each product formed by the reaction

What happens when there is an increase in temperature for a reaction rate? Select all that apply.

1. It increases the chance that the reaction will be endothermic
2. It increases the activation energy of a reaction
3. It increases the total number of molecular collisions that occur
4. It increases the percentage of collisions that result in a reaction

the last option is correct, but there are two options to choose so what would the other one be ?

Study the reaction. H2SO4(l) + CaCO3(s) ⇌ CO2(g) + H2O(l) + CaSO4(aq) Which of the following would cause the equilibrium to shift, producing more carbon dioxide gas? Select all that apply.

1. removing carbon dioxide gas from the system
2. adding CaCO3 to the system
3. removing water from the system
4. removing H2SO4 from the system

Why do water molecules tend to stick to each other to form a liquid?

1. The hydrogen atoms form negative ions that can make ionic bonds with oxygen.
2. The exposed charge on hydrogen's protons are attracted to unshared electron pairs on oxygen atoms. 
3. Water molecules can share electrons with neighboring molecules forming strong covalent bonds.

which of the option ?