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Question

For an ideal gas, the number of moles per litre in terms of its pressure $$P$$ , gas constant $$R$$ and temperature $$T$$ is:


A
PT/R
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B
PRT
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C
P/RT
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D
RT/P
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Solution

The correct option is C $$P/RT$$
From ideal gas equation, $$PV=nRT.$$

No. of moles per liter$$=\cfrac{n}{V}.$$

$$PV=nRT$$

$$\cfrac{P}{RT}=\cfrac{n}{V}$$

$$\therefore$$ No. of moles per liter $$=\cfrac{n}{V}=\cfrac{P}{RT}.$$

Chemistry

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