Give equations to show what happens when temporary hard water is

(b) treated with slaked lime

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Solution

(b) When temporary hard water is treated with slaked lime following reaction occur:

$C a (H C O_{3})_{2} + C a (O H)_{2} \to 2 C a C O_{3} ↓ + 2 H_{2} O$

$M g (H C O_{3})_{2} + C a (O H)_{2} \to M g C O_{3} ↓ + C a C O_{3} ↓ + 2 H_{2} O$

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Give equations to show what happens when temporary hard water is (b) treated with slaked lime

(b) When temporary hard water is treated with slaked lime following reaction occur: Ca(HCO3)2+Ca(OH)2→2CaCO3↓+2H2O Mg(HCO3)2+Ca(OH)2→MgCO3↓+CaCO3↓+2H2O

Give equations to show what happens when temporary hard water is

(b) treated with slaked lime

(b) When temporary hard water is treated with slaked lime following reaction occur:

$C a (H C O_{3})_{2} + C a (O H)_{2} \to 2 C a C O_{3} ↓ + 2 H_{2} O$

$M g (H C O_{3})_{2} + C a (O H)_{2} \to M g C O_{3} ↓ + C a C O_{3} ↓ + 2 H_{2} O$