Chemistry

Four g of a metallic chloride contains 1.89 g of the metal 'X'. Calculate the empirical formula of the metallic chloride. [At. wt. of 'X' = 64, Cl = 35.5]

66 Likes

4 g of metallic chloride contains 1.89 g of metal X

∴ 100 g of metallic chloride contains $\dfrac{1.89}{4}$ x 100 = 47.25 g of metal X

∴ % of Cl in the metallic chloride = 100 - 47.25 = 52.75%.

Element	% composition	At. wt.	Relative no. of atoms	Simplest ratio
X	47.25	64	$\dfrac{47.25}{64}$ = 0.738	$\dfrac{0.738}{0.738}$ = 1
Cl	52.75	35.5	$\dfrac{52.75}{35.5}$ = 1.48	$\dfrac{1.48}{0.738}$ = 2

X : Cl = 1 : 2

Hence, empirical formula is XCl₂

Answered By

25 Likes