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

Question

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

Tardigrade Admin · Accepted Answer

Atomic weight of metal = equivalent weight x valency =20 × 2=40 Molecular formula of metal chloride = MCl 2 ∴ Molecular mass of MCl 2=40+2 × 35.5=111 g mol -1

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

91

111

55.5

75.5

Atomic weight of metal = equivalent weight $x$ valency
$= 20 \times 2 = 40$
Molecular formula of metal chloride $= MC l_{2}$
$∴$ Molecular mass of
$MC l_{2} = 40 + 2 \times 35.5 = 111 g m o l^{- 1}$

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

91

111

55.5

75.5

Atomic weight of metal = equivalent weight x valency =20×2=40 Molecular formula of metal chloride =MCl2​ ∴ Molecular mass of MCl2​=40+2×35.5=111gmol−1

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

Atomic weight of metal = equivalent weight $x$ valency
$= 20 \times 2 = 40$
Molecular formula of metal chloride $= MC l_{2}$
$∴$ Molecular mass of
$MC l_{2} = 40 + 2 \times 35.5 = 111 g m o l^{- 1}$