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Question

If yield of reaction (iii) is 90%, then kilomoles of CO2 formed when 2.06×103 kg NaBr formed is :

A
20
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B
10
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C
40
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D
none of the above
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Solution

The correct option is B 10
The molar mass of NaBr is 103 g/mol.
2.06×103 kg NaBr corresponds to 2.06×106103=20000 moles of NaBr.
8 moles of NaBr corresponds to 4 moles of CO2.
Hence, 20000 moles of NaBr corresponds to 10000 moles of CO2.

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