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Chemistry

Grade-9

Easy

Question

The volume of hydrogen that is required to reduce the 0.795 of copper oxide into copper and water at Standard temperature and pressure:

22.4 L
44.8 L
11.2 L
0.224 L

hint Hint:

79.5 g of CuO reacts with 22.4L of hydrogen.

The correct answer is: 0.224 L

CuO + H₂ $rightwards arrow$ Cu + H₂O
1 mole of CuO reacts with 22.4L of hydrogen.
79.5 g of CuO reacts with 22.4L of hydrogen.
0.795g of Cuo reacts with 0.224L of hydrogen.

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