Question

the empirical formula of a compound is HO. vapour density is 17. its molecular formula is
a. H2O
B. H2O2
C. H303
D. H2O3​

Answer 1

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$—⫸\:{H}_{2}{O}_{2}$

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Answer 2

Given,

R.M.M of Hydrogen = 1 g, Oxygen = 16 g

Vapour Density = 17

Empirical Formula = HO

Empirical Formula Molar Mass = 1+16

= 17 g

Molecular Formula = (HO)n

Value of n = Molar Mass/Empirical Formula Molar Mass

= (2*Vapour Density)/Empirical Formula Molar Mass

= (2*17)/17

= 34/17

= 2

Molecular Formula = H₂O₂ (Option B)

I hope this helps.