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Question

A gas occupies $$300\ ml$$ at $${27}^{o}C$$ and $$730\ mm$$ pressure. What would be its volume at $$STP$$ ?


A
52.44 ml
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B
152.44 ml
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C
262.24 ml
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D
3.5244 ml
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Solution

The correct option is D $$262.24\ ml$$
$$V_2 = \dfrac{300}{1000}mL$$

$$P_2 = \dfrac{730}{760}atm$$

$$T_2 = 300K$$

At STP, $$V_1 = ?$$

$$P_1 = 1 atm$$

$$T_1 = 273K$$

From Ideal gas equation:

$$\dfrac{P_2V_2}{T_2} = \dfrac{P_1V_1}{T_1}$$

$$V_1$$ = 0.2622 litre

Volume (V) at STP = 262.2 mL

Hence, the correct answer is option C.

Chemistry

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