McqMate
| Q. |
Rate of reaction is the |
| A. | number of reactant molecules or atoms that take part in chemical reactions to give the products. |
| B. | sum of exponents or powers of concentration terms in the rate equation |
| C. | time required for reactant concentration to decrease to 90% of the initial concentration. |
| D. | speed at which chemical reaction takes place |
| Answer» D. speed at which chemical reaction takes place | |
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