5 g of zinc is treated separately with an excess of ( 1 ) dilute hydrochloric acid and ( 2 ) aqueous sodium hydroxide. The ratio of the volumes of H 2 evolved in these two reactions is

Question

5 g of zinc is treated separately with an excess of ( 1 ) dilute hydrochloric acid and ( 2 ) aqueous sodium hydroxide. The ratio of the volumes of H 2 evolved in these two reactions is, 1:4, 1:1, 1:2, 2:1

MARKS App · Accepted Answer

Z n + 2 H C l → Z n C l 2 + H 2 Z n + 2 N a O H → N a 2 Z n O 2 + H 2 Mole of Z n = M o l e o f d i l . H C l 2 = M o l e o f N a O H 2 As volume of a gas ∝ moles of gas Volume of H 2 from HCl Volume of H 2 from NaoH = 1 1

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