Explain why the pH of the solution increases when sodium is added to aqueous copper(II) chloride. 

A piece of zinc was added to aqueous iron(II) sulfate. State and explain the observations.

Describe and explain the observations when chlorine gas is bubbled into a test tube of aqueous magnesium iodide.

Identify the electrolyte,  $$XSO_4$$  

Explain why the pure copper block increases in size.

Explain why the blue colour of the electrolyte will not fade over time. 

Excess hydrochloric acid was added to 1 g of MgCO₃

producing MgCl₂, CO₂ and H₂O.

If the hydrochloric acid was replaced with sulfuric acid of the same concentration, describe and explain how the rate of reaction would change.

Excess hydrochloric acid was added to 1 g of MgCO₃

producing MgCl₂, CO₂ and H₂O. 

If the hydrochloric acid was replaced with sulfuric acid of the same concentration, would there be any change in the volume of CO₂? Explain. 

In terms of collisions between reacting particles, explain the effect of increasing the concentration of an aqueous reactant on the rate of reaction. 

In terms of collisions between reacting particles, explain the effect of increasing the temperature on the rate of reaction.

In terms of collisions between reacting particles, explain the effect of adding a catalyst on the rate of reaction.