Question

Fructose has the same empirical formula as glucose. What is the molar mass of fructose’s empirical formula (in units of g/mol)?

Answer 1

Answer:

Molar mass of fructose’s empirical formula

$180$ g/ mol

Explanation:

The molecular formula of glucose is $C_6H_{12}O_6$ . The empirical formula of glucose is $(CH_2O)_6$

Like wise the molecular formula of fructose is $C_6H_{12}O_6$ . The empirical formula of fructose is $(CH_2O)_6$

Empirical formula gives the proportionate mass of a chemical compound.

The molar mass of  fructose is equal to the sum of individual masses of its constituting elements in a proportion as presented in empirical formula.

$12 g C + 2(1 g H) + 16 g O$

$= 30 \frac{g}{mol}$

$= 30 * 6 = 180$ g.mol as there are 6 molecules of $CH_2O$ in fructose.