Question

Why concentrated sulphuric acid or hydrochloric acid is not used for preparation of hydrogen gas in the laboratory?

Answer 1

Explanation:

Both the acids are quite strong as when we test their pH levels they range between 0-1 which make it highest ranked acid which can dissociate maximum H+ ions on dissolving with water and also

HCl or H2SO4 acid not used in the laboratory preparation of hydrogen.

Answer 2

Answer:

because concerned HCl and h2so4 are highly reactivie

so they can form metelic hydrides very fast ....

so formation of h2 gas is not possible very fast

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