Rain water is called as acid rain when its pH | vedclass

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(A) Pure water has a $pH$ of $7.0$ (neutral). Natural,unpolluted rainwater has a $pH$ of about $5.6$ due to the presence of dissolved $CO_{2}$ which f

Vedclass · Accepted Answer

$5.6$

Vedclass · Answer

(A) Pure water has a $pH$ of $7.0$ (neutral). Natural,unpolluted rainwater has a $pH$ of about $5.6$ due to the presence of dissolved $CO_{2}$ which forms carbonic acid. When the $pH$ of rainwater drops below $5.6$,it is termed as acid rain,primarily caused by the presence of atmospheric pollutants like oxides of nitrogen $(NO_{x})$ and sulfur $(SO_{x})$.

Rain water is called as acid rain when its $pH$ is below

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