Question

why H2S o4 is not used in the preparation of H2 gas from Zn granules?​

Answer 1

Answer:

The presence of impurities increases the rate of the reaction by forming electrochemical couples. (ii) Concentrated H2SO4 cannot be used for the preparation of hydrogen gas as it results in the formation of SO2 gas instead of H2 from zinc. ... When hydrogen is burnt in oxygen heat is liberated.

Explanation:

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Answer 2

Answer:

Sorry , but your question should be like - ' Why CONCENTRATED HYDROGEN shouldn't be used ?'

Cause - Concentrated H2SO4 oxidises H2 into water and itself gets reduced to SO4

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