Question

magnesium reacts with hydrochloric acid to form hydrogen gas and magnesium chloride: mg(s) + 2hcl(aq) → mgcl₂(aq) + h₂(g) which actions would increase the rate of reaction? check all that apply. using hot hydrochloric acid solution adding hot water to the solution using magnesium powder instead of a large piece of magnesium increasing pressure on the system retry

Explanation:

Step1: Consider temperature effect

Increasing temperature generally increases reaction rate. Hot hydrochloric acid has higher - energy particles, so using hot hydrochloric acid solution will increase the reaction rate.

Step2: Analyze dilution effect

Adding hot water to the solution dilutes the hydrochloric acid. A lower concentration of reactant (HCl) will decrease the reaction rate, not increase it.

Step3: Think about surface - area effect

Using magnesium powder instead of a large piece of magnesium increases the surface - area of magnesium. A larger surface - area provides more sites for the reaction to occur, thus increasing the reaction rate.

Step4: Evaluate pressure effect

For this reaction, which involves a solid (Mg) and an aqueous solution (HCl), pressure has little to no effect on the reaction rate as only gases are affected by pressure changes in a significant way for reaction rates.

Answer:

using hot hydrochloric acid solution, using magnesium powder instead of a large piece of magnesium