If the reaction between $\mathrm{CO}_{2}$ and $\mathrm{H}_{2} \mathrm{O}$ is $\mathrm{CO}_{2}+\mathrm{H}_{2}…

If the reaction between $\mathrm{CO}_{2}$ and $\mathrm{H}_{2} \mathrm{O}$ is $\mathrm{CO}_{2}+\mathrm{H}_{2} \mathrm{O} ightleftharpoons \mathrm{H}_{2} \mathrm{CO}_{3} ightleftharpoons \mathrm{H}^{+}+\mathrm{HCO}_{3}^{-}$
If $\mathrm{CO}_{2}$ escapes from the system
  1. $\mathrm{pH}$ will decrease
  2. $\mathrm{H}^{+}$ concentration will decrease
  3. $\mathrm{H}_{2} \mathrm{CO}_{3}$ concentration will be altered
  4. The forward reaction is promoted

Solution

$\mathrm{CO}_{2}+\mathrm{H}_{2} \mathrm{O} ightleftharpoons \mathrm{H}_{2} \mathrm{CO}_{3}$
$ightleftharpoons \mathrm{H}^{+}+\mathrm{HCO}_{3}^{-}$
If $\mathrm{CO}_{2}$ escapes, the equilibrium will shift to LHS and $\left[\mathrm{H}^{+}ight]$ concentration will decrease ^

Asked in: JEE-TOPICTESTS-CHEMISTRY

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