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Q.

A vessel contains 16 g of hydrogen and 128 g of oxygen at standard temperature and pressure. The volume of the vessel in cm3 is :

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a

72×105

b

54×104

c

27×104

d

32×105

answer is C.

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Detailed Solution

detailed_solution_thumbnail

No of moles of H2 = 8 moles 

No of moles of O2 = 4 moles  

Total moles = 12 moles 

At STP, volume occupied by 1 mole = 22.4 L = 22.4 × 103 cm3 

At STP, volume occupied by 12 moles = 12 × 22.4 × 103 cm3  = 26.88 × 104 cm3  =27 × 104 cm3

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