Equal weights of ethane () and hydrogen () are mixed in an empty container at . The fraction of the — States of Matter and Gaseous State Chemistry Question
Question
Equal weights of ethane ($C_2H_6$) and hydrogen ($H_2$) are mixed in an empty container at $25^\circ\text{C}$. The fraction of the total pressure exerted by hydrogen is:
Answer: D
💡 Solution & Explanation
Let weight be $w$. Moles of $C_2H_6 = w/30$, Moles of $H_2 = w/2$. Fraction of $H_2$ pressure = mole fraction of $H_2 = (w/2) / (w/2 + w/30) = 15/16$.
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