Question

180ml of water mixed with 20g of caco3 to prepare a solution then find the mole fraction of caco3
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Answer 1

Answer:

formula mass of caco3 = 100

180ml of water contains 20 g of caco3

or, 1000 ml of water will contain

(20/180)×1000 g caco3

=1000/9 g caco3

= 111 g caco3 (approx.)

so , from mol' defination we get 100 g of caco3 will contain 1mol of caco3

so,111 g will contain 1.11 mol of caco3

so the molar fraction is ,

1.11mol/liter

hope it will help you