QJEEM20Chcf30: JEE Main 2020 Chemistry - Class 11 JEEM20Chcf30 Solution: The average molar mass of chlorine is 35.5 g mol –1 . The ratio …

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The average molar mass of chlorine is 35.5 g mol^–1. The ratio of ³⁵Cl to ³⁷Cl in naturally occuring chlorine is close to :

Accepted Answer

Average molar mass =

\frac{n_{1} M_{1} + n_{2} M_{2}}{(n_{1} + n_{2})}

∴

35.5 =

\frac{35 x + 37 y}{x + y}

\Rightarrow

1.5y = –0.5x

\Rightarrow

\frac{x}{y} = \frac{3}{1}

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