A catalyst is    a. A substance which increases the rate of a reaction by adding heat to it.   b. A substance which increases the rate of a reaction without being used up in the reaction.   c. An intermediate in a reaction which influences its rate.   d. A solid which provides a "kick start" for the reaction, but is not affected by it.

Chemistry: Matter and Change
1st Edition
ISBN:9780078746376
Author:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom
Publisher:Dinah Zike, Laurel Dingrando, Nicholas Hainen, Cheryl Wistrom
Chapter16: Reaction Rates
Section: Chapter Questions
Problem 42A: How would you express the rate of the chemical reaction AB based on the concentration of Reactant A?...
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A catalyst is 

  a.

A substance which increases the rate of a reaction by adding heat to it.

  b.

A substance which increases the rate of a reaction without being used up in the reaction.

  c.

An intermediate in a reaction which influences its rate.

  d.

A solid which provides a "kick start" for the reaction, but is not affected by it.

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