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  4. Which colourless gas evolves when NH4Cl reacts with zinc in a dry cell battery?

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Q. Which colourless gas evolves when $ N{{H}_{4}}Cl $ reacts with zinc in a dry cell battery?

MGIMS WardhaMGIMS Wardha 2005

Solution:

$ {{H}_{2}} $ gas is evolved. When Zn reacts with $ N{{H}_{4}}Cl $ in dry cell battery. $ Zn+2N{{H}_{4}}Cl\xrightarrow[{}]{{}}Zn{{(N{{H}_{3}})}_{2}}C{{l}_{2}}+\underset{\begin{smallmatrix} colourless \\ \,\,\,\,gas \end{smallmatrix}}{\mathop{{{H}_{2}}\uparrow }}\, $