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The equivalent mass of a certain bivale...

The equivalent mass of a certain bivalent metal is 20 . The molecular mass of its anhydrous chloride is

A

91

B

111

C

55.5

D

75.5

Text Solution

Verified by Experts

The correct Answer is:
B
Equivalent mass of bivalent metal = 20
Atomic mass = Eq. mass xx valency
` = 20 xx 2 = 40`
formula of anhydrous chloride ` = MCl_2`
Molecular mass = 40 + 2 x 35.5 = 111
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