Which ion is responsible for the hardness in water?

Question

Which ion is responsible for the hardness in water? (A) Ca+ 2 (B) Na+ (C) CI- (D) K

Tardigrade Admin · Accepted Answer

The ions that cause hardness in water are Ca+ 2 and Mg+ 2 . They form salts with HCO3 , Cl- , SO4- 2 ions which when dissolved in water, cause the hardness of the water.

Q. Which ion is responsible for the hardness in water?

$C a^{+ 2}$

$N a^{+}$

$C I^{-}$

$K$

The ions that cause hardness in water are $C a^{+ 2}$ and $M g^{+ 2}$ . They form salts with $H C O_{3}$ , $C l^{-}$ , $S O_{4}^{- 2}$ ions which when dissolved in water, cause the hardness of the water.

Q. Which ion is responsible for the hardness in water?

Ca+2

Na+

CI−

K

The ions that cause hardness in water are Ca+2 and Mg+2 . They form salts with HCO3​ , Cl− , SO4−2​ ions which when dissolved in water, cause the hardness of the water.

$C a^{+ 2}$

$N a^{+}$

$C I^{-}$

$K$

The ions that cause hardness in water are $C a^{+ 2}$ and $M g^{+ 2}$ . They form salts with $H C O_{3}$ , $C l^{-}$ , $S O_{4}^{- 2}$ ions which when dissolved in water, cause the hardness of the water.