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Question

The density of oxygen is 1.43 g L1 at STP. The density of oxygen at 17C and 800 torr is:

A
1.417 g L1
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B
4.4 g L1
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C
0.5 g L1
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D
5.728 g L1
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Solution

The correct option is A 1.417 g L1
At STP,
P1=760 torr; T1=273 K; d1=1.43 g L1
At given conditions,
P2=800 torr; T2=290 K; d2=?]

We know, PM=dRT
d2d1=P2T2×T1P1

d2=P2P1×T1T2×d1

=800760×273290×1.43

=1.417 g L1

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