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The work done by the gas liberated when 50 g of iron  (molar mass 55.85gmol1 )  reacts with hydrochloric acid in an open beaker at 25°C

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a
Zero
b
−2.2kJ
c
2.2kJ
d
0.22kJ

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detailed solution

Correct option is B

w=−∆nRTw=5055.85×8.314×298w=−2218.05J=−2.218kJ

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