(a) Which compound of sodium is used for softening hard water? (b) What is the effect of heat on the compounds ? (Write equations for the reactions): (c ) Draw the structure of : (i) `BeCI_(2)` (in vapour state) (ii) `BeCI_(2)` (in solid state)

(a) Which compound of sodium is used for softening hard water? (b) Wha

1.	(a) Which compound of sodium is used for softening hard water? (b) What is the effect of heat on the compounds ? (Write equations for the reactions): (c ) Draw the structure of : (i) `BeCI_(2)` (in vapour state) (ii) `BeCI_(2)` (in solid state)
Answer» (a) Sodium hydrogen carbonate `(NaHCO_(3))` is used for softening hard water. (b) `underset(("Glysum"))(CaCO_(2)) overset("Heat")(to) CaO + CO_(2)` (ii) `underset(("Glysum"))(CaSO_(4).2H_(2)O) overset("Heat")(to) underset(("Plaster of pairs"))(CaSO_(4).1//22H_(2)O) + 3//2 H_(2)O`

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(a) Which compound of sodium is used for softening hard water? (b) What is the effect of heat on the compounds ? (Write equations for the reactions): (c ) Draw the structure of : (i) `BeCI_(2)` (in vapour state) (ii) `BeCI_(2)` (in solid state)

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