Q20 / 180 · KCET 2013 · Chemistry

When formic acid is heated with conc. $\mathrm{H}_{2} \mathrm{SO}_{4}$, the gas evolved is

  • A
    Only $\mathrm{CO}_{2}$
  • Correct answer
    B
    Only CO
  • C
    a mixtue of $\mathrm{CO}$ and $\mathrm{CO}_{2}$
  • D
    a mixtue of $\mathrm{SO}_{2}$ and $\mathrm{CO}_{2}$

Solution

When warmed with conc. $\mathrm{H}_{2} \mathrm{SO}_{4}$, formic acid gives $\mathrm{CO}$ and $\mathrm{H}_{2} \mathrm{O}$. $\mathrm{HCOOH} \stackrel{\text { conc. } \mathrm{H}_{2} \mathrm{SO}_{4}}{\longrightarrow} \mathrm{CO}+\mathrm{H}_{2} \mathrm{O}$

Hence, the correct answer is option: 'B'.

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