Question

Question

When pieces of zinc are added to an aqueous solution of hydrochloric acid, the solution releases hydrogen gas and a
solution of zinc chloride forms. Which two changes would likely increase the rate of this reaction?
Zn(s) + 2HCl(aq) - Hale) * ZnCl(aq)
Add more pieces of zinc (2n) to the mixture
Place the reaction mixture in a refrigerator,
w Heat the hydrochloric acid (HC) solution.
Decrease the amount of hydrochloric acid (HCI) used,
Add water to the reaction mixture.

Answer 1

1 and 3

Step-by-step explanation:

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Answer 2

Add more pieces of zinc (2n) to the mixture

Heat the hydrochloric acid (HC) solution.

Step-by-step explanation:

The reaction rate is simply the speed of the reaction. It is usually monitored by the rate at which the concentration of either of the reactants or products are changing per unit of time.

The factors affecting the rate of reactions are:

• Nature of the reactants
• Concentration or pressure of gases
• Temperature of the reaction
• Availability of catalysts
• Sunlight

In this problem, if the concentration of the zinc increases, the rate of reaction will increase.

If the temperature of HCl increases, so also the rate of the reaction.