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Question: > A compound contains two elements ‘x’ and ‘y’ in the ratio of 50% each. Atomic mass of ‘x’ is 20 an...

A compound contains two elements ‘x’ and ‘y’ in the ratio of 50% each. Atomic mass of ‘x’ is 20 and ‘y’ is 40. What can be its simplest formula?

A

XY

B

X2YX_{2}Y

C

XY2XY_{2}

D

X2Y3X_{2}Y_{3}

Answer

X2YX_{2}Y

Explanation

Solution

(2) : Percentage of element‘X’= 50,

Mole ratio =5020=2.5\frac{50}{20} = 2.5

Percetange of element ‘Y’ = 50,

mole ratio = 5040=1.25\frac{50}{40} = 1.25

For ‘X’ simple ratio= 2.5/1.25=22.5/1.25 = 2

For ‘Y’ simple ratio = 1.25/1.25=1

Formula =X2Y= X_{2}Y