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Q.

CuO+H2Cu+H2O is a balanced chemical equation, causing reduction of CuO. What volume of H2 at STP is required to reduce 7.95 gm of CuO to give Cu and H2O ?
(Atomic weight of Cu = 63.5 U and Atomic weight of O = 16U) 

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a

0.224 lit

b

22.4 lit

c

224 lit

d

2.24 lit

answer is C.

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Detailed Solution

1 mole of  CuO – 1 mole of  H2
79.5g of CuO – 22.4 Lt of  H2
7.95g of CuO – 2.24 Lt of  H2

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