Q.

The molarity of orthophosphoric acid having purity of 70 % by weight and specific gravity 1.54 would be

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a

11 M

b

22 M

c

33 M

d

44 M

answer is A.

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Detailed Solution

70 % by weight 70 gm H3PO4  100 gm solution/sample
V=Wd=1001.54  M=70×100098×100/1.54=11 M

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