Three solutions X,Y,Z of HCl are mixed to produce 100 mL of 0.1 M solution. The molarities of X,Y and Z are 0.07 M,0.12 M and 0.15 M respectively What respective volumes of X, Y and Z should be mixed ?
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a
50 mL, 25 mL, 25 mL
b
20 mL, 60 mL, 20 mL
c
40 mL, 30 mL, 30 mL
d
55 mL, 20 mL 25 mL
answer is D.
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Detailed Solution
From options,MR=55×0.07+20×0.12+25×0.1555+20+25=0.1