A compound of X and Y has the empirical formula $X Y_{2}$ . Its vapour density is equal to its empirical formula weight. Determine its molecular formula.

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Solution

Step 1 Given
A compound of X and Y has the empirical formula $X Y_{2}$
Step 2 Find molecular formula.
Empirical formula = $X Y_{2}$ .
empirical formula weight = V.D (Vapor density)
Molecular weight = 2 x V.D (Vapor density)
So, the Molecular formula is ${(X Y_{2})}_{2} = X_{2} Y_{4}$

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A compound of X and Y has the empirical formula XY2. Its vapour density is equal to its empirical formula weight. Determine its molecular formula.

Step 1 GivenA compound of X and Y has the empirical formula XY2Step 2 Find molecular formula. Empirical formula = XY2.empirical formula weight = V.D (Vapor density)Molecular weight = 2 x V.D (Vapor density)So, the Molecular formula is XY22=X2Y4

A compound of X and Y has the empirical formula $X Y_{2}$ . Its vapour density is equal to its empirical formula weight. Determine its molecular formula.

Step 1 Given
A compound of X and Y has the empirical formula $X Y_{2}$
Step 2 Find molecular formula.
Empirical formula = $X Y_{2}$ .
empirical formula weight = V.D (Vapor density)
Molecular weight = 2 x V.D (Vapor density)
So, the Molecular formula is ${(X Y_{2})}_{2} = X_{2} Y_{4}$