A hydrocarbon has an empirical formula of $C H$ and a molar mass of $26 g / m o l$ . What is the molecular formula of this compound?

C_{2} H_{2}

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C_{3} H_{3}

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{C_{4} H}_{4}

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C_{6} H_{6}

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Solution

The correct option is D $C_{2} H_{2}$
Let molecular formula of compound $= (C H)_{n}$
The molar mass $= 26 g$
Molar mass of $= (C H)_{n} = n (12 + 1) = 13 n$
So, $13 n = 26$
$\Rightarrow n = 2$
So, the molecular formula is $C_{2} H_{2}$

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A hydrocarbon has an empirical formula of CH and a molar mass of 26 g/mol. What is the molecular formula of this compound?

The correct option is D C2H2Let molecular formula of compound =(CH)nThe molar mass =26 gMolar mass of=(CH)n=n(12+1)=13nSo, 13n=26⇒n=2So, the molecular formula is C2H2

A hydrocarbon has an empirical formula of $C H$ and a molar mass of $26 g / m o l$ . What is the molecular formula of this compound?

The correct option is D $C_{2} H_{2}$
Let molecular formula of compound $= (C H)_{n}$
The molar mass $= 26 g$
Molar mass of $= (C H)_{n} = n (12 + 1) = 13 n$
So, $13 n = 26$
$\Rightarrow n = 2$
So, the molecular formula is $C_{2} H_{2}$