   Chapter 2, Problem 84PS

Chapter
Section
Textbook Problem

An organic compound has the empirical formula C2H4NO. If its molar mass is 116.1 g/mol, what is the molecular formula of the compound?

Interpretation Introduction

Interpretation:

The molecular formula of compound is to be determined, the empirical formula and molar mass are C2H4NO and 116.1 g/mol .

Concept introduction:

• Empirical formula of a compound represents the smallest whole number relative ratio of elements in that compound.
• Equation for finding Molecular formula from the empirical formula,

Molecular formula=MolarmassEmpiricalformula mass × Empirical formula

• Equation for number moles from mass and molar mass,

Numberofmoles=MassingramsMolarmass

Explanation

The empirical formula of compound is C2H4NO.

The empirical formula mass of compound is 58.05g.

The molar mass of compound is 116.1 g/mol

Equation for finding Molecular formula from the empirical formula,

Molecular formula=MolarmassEmpiricalformula

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