Sodium, calcium, magnesium, and zinc were taken in four test tubes having dilute hydrochloric acid. In which test tube the rate of the reaction will be faster?

Test tube having zinc

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Test tube having sodium

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Test tube having magnesium

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Test tube having calcium

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Solution

The correct option is B Test tube having sodium
The nature of the reactant plays an important role in the chemical reaction. The more reactive metal reacts faster than that of less reactive metal. Therefore, the rate of reaction is faster in case of more reactive metals. Since sodium is more reactive than calcium, magnesium and zinc, the rate of the reaction will be faster in the case of the test tube having sodium metal.

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When dilute hydrochloric acid is added to zinc pieces taken in a test tube:

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