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CBSE Class 10 Answered

q) equal lengths of mg ribbon are taken in test tubes A  and B. hydrochloric acid is added to test tube A while acetic acid is added to test tube B. in which case the reaction would occur more  vigourously  and why? write the chemical equations for reaction in test tubes A and B.
Asked by ajayrath7 | 25 Mar, 2019, 10:43: AM
answered-by-expert Expert Answer

Fizzing in the reaction is due to evolution of hydrogen gas by the action of metal on acid.

In test tube A :

Mg(s) + 2HCl(aq) →MgCl2(aq) + H2(g)

In test tube B :

Mg + CH3COOH(aq) → (CH3COO)2Mg + H2(g)

Since hydrochloric acid is a strong acid and acetic acid is a weak acid, so evolution of H2 gas occurs more readily in case of HCl.

Answered by Ramandeep | 25 Mar, 2019, 05:19: PM

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