Washington Comprehensive Assessment Of Science (WCAS) Grade 11 Practice Questions - Washington Comprehensive Assessment Of Science - Grade 11 Exam

How does increasing the concentration of hydrochloric acid affect its reaction rate with zinc metal chips?

It increases the reaction rate by increasing the frequency of collisions between reactant particles. It decreases the reaction rate by lowering the temperature of the acid solution. It stops the reaction by destroying all zinc atoms immediately. It has zero effect on the reaction rate.

Correct Answer:

It increases the reaction rate by increasing the frequency of collisions between reactant particles.

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