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Question

If the volume of X molecules of H2 gas at STP is 5L. What will be the value of X molecules of O2 gas at STP?

A
580L
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B
165L
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C
516L
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D
5L
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Solution

The correct option is D 5L
Given:- Volume of X molecules of H2 gas at STP
is 5 L.
moles of H2(g)=5224
molecules, x=522.4×NA(NA= Avogadro's number
So, Volume for X molecules of O2 gas.
moles =5224×NANA=522.4
1 mole =224 L
5 mole O2(g)=522:4×224=5L
So, correct answer is D) 5 L, means all gases
at STP Containing same number of molecules have
same volume.


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