Home » Past Questions » Chemistry » A gaseous metallic chloride MClx consists of 20.22% of M by mass. The formula of...

A gaseous metallic chloride MClx consists of 20.22% of M by mass. The formula of...


Question

A gaseous metallic chloride MClx consists of 20.22% of M by mass. The formula of the chloride is

[M = 27, Cl = 35.5]

Options

A) MCl

B) MCl2

C) MCl3

D) M2Cl6


The correct answer is C.

Explanation:

Percentage by mass of M = 20.22%
Percentage by mass of Cl = ?
100 - 20.22 = 79.78%
Mass given ration of M
M = 2022/27 = 0.75
Chlorine = 79.78/35.5 = 2.24
Divide by the smallest
M = 0.75/0.75 = 1
Cl = 2.24/0.75 = 3
∴ The formula = MCl3

More Past Questions:


Dicussion (1)

  • Percentage by mass of M = 20.22%
    Percentage by mass of Cl = ?
    100 - 20.22 = 79.78%
    Mass given ration of M
    M = 2022/27 = 0.75
    Chlorine = 79.78/35.5 = 2.24
    Divide by the smallest
    M = 0.75/0.75 = 1
    Cl = 2.24/0.75 = 3
    ∴ The formula = MCl3

    Reply
    Like