Acid rain takes place dur to combination of acidic oxides with water and it is an envirronmental
Channel: Doubtnut
Date: 2021-11-10

Acid rain takes place dur to combination of acidic oxides with water and it is an envirronmental concern all over the world. Assuming rain water is uncontaminated with `HNO_(3)` or `H_(2)SO_(4)` and is in equilibrium with `1.25 xx 10^(-4)` atm `CO_(2)`. The Henry's law constant `(K_(H))` is `1.25 xx 10^(6) "torr". K_(a_(1))` of `H_(2)CO_(3) = 4.3 xx 10^(-7)`  Given : `K_(f)CuCI^(Theta) = 1.0 (K_(f)` is formation constant of `CuCI^(o+))`   If `SO_(2)` content is the atomsphere is `0.64 "ppm"` by volume, `pH` of rain water is (assume `100%` ionisation of acid rain as monobasic acid).