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Stoichiometry

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in Some basic concepts in chemistry by (70 points)
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A metal chloride contains 55.0% of chlorine by weight. 100 mL vapours of the metal chloride at STP weigh 0.57 g. The molecular formula of the metal chloride is (Given: Atomic mass of chlorine is 35.5u)

 (1) MCl2

 (2) MCl4

 (3) MCl3

(4) MCl5
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1 Answer

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by (42.5k points)

Correct option is (1) MCl2

Molecular weight of metal chloride

\(=\frac{0.57}{100}\times 22700\)

= 129.39

Weight of Cl = 129.39 x 0.55

= 71.1645

∴ Mole of Cl = \(\frac{71.1645}{35.5}\cong 2\)

Hence MCl2

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