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Q.

20 ml of CaCl2 solution is mixed with 30 ml of 0.1 MAlCl3 solution. If the resulting solution has chloride ion concentration equal is 0.34 M, the concentration of CaCl2 solution added is:

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a

0.4 M

b

0.2 M

c

0.7 M

d

0.1 M

answer is A.

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Detailed Solution

Suppose, concentration of calcium chloride is x. Thus,

20×x×2+30×0.1×350=0.34 x=0.2

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