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Some Basic Concepts of Chemistry
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12/08/2021 11:52 am
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A transition metal M forms a volatile chloride which has a vapour density of 94.8. If it contains 74.75% of chlorine the formula of the metal chloride will be
(a) MCl3
(b) MCl2
(c) MCl4
(d) MCl5
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12/08/2021 12:06 pm
Correct answer: (c) MCl4
Explanation:
74.75% of chlorine means 74.75g chlorine is present in 100g of metal chloride.
Weight of metal = 100g – 74.75g
= 25.25g
Equivalent weight
= \(\frac{weight\;of\;metal}{weight\;of\;chlorine}\) x 35.5
= \(\frac{25.25}{74.75}\) x 35.5 = 12
Valency of metal
= \(\frac{2 \times V.D.}{Equivalent\;wt. of\;metal + 35.5}\)
= \(\frac{2 \times 94.8}{12 + 35.5}\) = 4
∴ Formula of compound = MCl4