Verified Solution • 2025–26 Session moderate

QJEEM22Chbc0d: JEE Main 2022 Chemistry - Class 11 JEEM22Chbc0d Solution: 116 g of a substance upon dissociation reaction, yields 7.5 g…

116 g of a substance upon dissociation reaction, yields 7.5 g of hydrogen, 60 g of oxygen and 48.5 g of carbon. Given that the atomic masses of H, O and C are 1, 16 and 12, respectively. The data agrees with how many formulae of the following?

A. CH3COOH, B. HCHO, C. CH3OOCH3, D. CH3CHO

Step-by-Step Verified Solution

amp;%H=7.5116×100=6.5amp;%O=60116×100=51.7amp;%C=48.5116×100=41.8\begin{aligned}&\% \mathrm{H}=\frac{7.5}{116} \times 100=6.5 \\\\&\% \mathrm{O}=\frac{60}{116} \times 100=51.7 \\\\&\% \mathrm{C}=\frac{48.5}{116} \times 100=41.8\end{aligned}

Relative atomicities =H⇒6.5=\mathrm{H} \Rightarrow 6.5

amp;O⇒51.716=3.25amp;C⇒41.812=3.5\begin{aligned}&\mathrm{O} \Rightarrow \frac{51.7}{16}=3.25 \\\\&\mathrm{C} \Rightarrow \frac{41.8}{12}=3.5\end{aligned}

Emperically formula is approx.. CH2O\mathrm{CH}_2 \mathrm{O}

(A) C2H4O2\mathrm{C}_2 \mathrm{H}_4 \mathrm{O}_2 (B) CH2O\mathrm{CH}_2 \mathrm{O} relate to this formula.

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