States of Matter - Result Question 82

Answer:

Correct Answer: 83. (5.23 L)

Solution:

$ V=\dfrac{n R T}{p} $

For acetylene gas, $5 g=\dfrac{5}{26} mol$

$ \begin{aligned} & p=740 mm=\dfrac{740}{760} \hspace {1mm} atm \hspace {1mm} {(\because 1 \hspace {1mm} atm = 760mm \hspace {1mm} Hg )} \\ & ~ \\ & T=50^{\circ} C=323 K \end{aligned} $

Substituting in ideal gas equation

$ V=\dfrac{5}{26} \times \dfrac{0.082 \times 323}{74} \times 76=5.23 L $