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Q.

A mixture of hydrogen and oxygen has volume 2000 cm3, temperature 300 K, pressure 100kPa and mass 0.76 g The ratio of number of moles of hydrogen to number of moles of oxygen in the mixture will be :

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a

1/16

b

c

16/1

d

3/1

answer is B.

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Detailed Solution

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PV=nRT n=100×103×2000×10-6253×300 n=80×10-3 n1+n2=0.08 n1×2+n2×32=0.76 0.08-n22+n2(32)=0.76 n2=0.02 n1=0.06 n1n2=31

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