Question

$C{O}_2$ goes to the atmosphere (greenhouse effect) and thus gets dissolved in $H_{2}O$. How it is effect $pH$ of the waterand what is the effect on the fertility of the soil?

• A. $pH$ increases,Fertility of the soil also decreases.
• B. $pH$ decreases,Fertility of the soil also increases.
• C. $pH$ increases,Fertility of the soil also increases.
• D. $pH$ decreases,Fertility of the soil also decreases.

Answer 1

The correct option is D $pH$ decreases,Fertility of the soil also decreases.

$C{O}_2+H_{2}O\rightleftharpoons H_{2}C{O}_3$
$H_{2}C{O}_3\to H^{+}+HC{O}_3^{-}$
$\left[H^{+}\right]$ increases hence $pH$ decreases. Fertility of the soil also decreases.
Hence option D is correct.