Question

# A given mass of a gas occupies 143 $$cm^3$$ at $$27^{\circ}C$$ and $$700 mm$$ Hg pressure. What will be its volume at $$300 K$$ and $$280 mm$$ Hg pressure?

Solution

## V = 143 $$cm^3$$P = $$700 \ mm \ Hg$$T = $$27^{\circ}C$$ = $$27 + 273 = 300 K$$$$P_1=280\ mm \ Hg$$$$V_{1}$$ = ?$$T_{1} = 300 K$$Gas equation states that,$$\dfrac{PV}{T} = \dfrac{P_1V_1}{T_1}$$$$\dfrac{700 \times 143}{300} = \dfrac{280 \times V_1}{300}$$$$V_1 =357.5 \ cm^3$$Chemistry

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