0.1 mole of a carbohydrate with empirical formula ${\rm{C}}{{\rm{H}}_2}{\rm{O}}$ contains 1 g of hydrogen. What is its molecular formula?

${{\rm{C}}_5}{{\rm{H}}_{10}}{{\rm{O}}_5}$

${{\rm{C}}_6}{{\rm{H}}_{12}}{{\rm{O}}_6}$

${{\rm{C}}_4}{{\rm{H}}_8}{{\rm{O}}_4}$

${{\rm{C}}_3}{{\rm{H}}_6}{{\rm{O}}_3}$

JEE CHEMISTRY MCQ: SOME BASIC CONCEPTS OF CHEMISTRY

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0.1 mole of a carbohydrate with empirical formula

\mathrm{C}{\mathrm{H}_2}\mathrm{O}

contains 1 g of hydrogen. What is its molecular formula?

View answer and explanation

Correct option: A

{\mathrm{C}_5}{\mathrm{H}_{10}}{\mathrm{O}_5}

Option A (

{\mathrm{C}_5}{\mathrm{H}_{10}}{\mathrm{O}_5}

) is correct because the molecular formula is determined by finding the number of moles of hydrogen and relating it to the empirical formula.