Answer the following questions, relating your answers only to salts in the list given below :
Anhydrous Calcium Chloride, Copper Sulphate-5-water, Sodium Carbonate-10 – water.
(a) Which compound is efflorescent?
(b) Which compound is blue in colour?
(c) Which compound is deliquescent?
(d) What would be seen on mixing a solution of Calcium chloride with a solution of Sodium
carbonate?
(e) Write the balanced equation for occurring when a solution of Calcium chloride is mixed with a
solution of Sodium carbonate.
Answers
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(a) Which compound is efflorescent?
Answer - Sodium carbonate(Na2CO3). 10-H2O.
(b) Which compound is blue in colour?
Answer - Copper sulphate(CuSO4). 5H2O.
(c) Which compound is deliquescent?
Answer - Anhydrous calcium chloride.
(d) What would be seen on mixing a solution of Calcium chloride with a solution of sodium carbonate?
Answer - A white precipitate of calcium carbonate is seen.
(e) Write the balanced equation for occurring when a solution of calcium chloride is mixed with a solution of sodium carbonate.
Answer - CaCl2(aq.) + Na2CO3 (aq.) —> CaCO3 (White ppt) + 2NaCl (aq.)
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