Question

0.1 mole of a carbohydrate with empirical formula ch2o contains 10 g of hydrogen. What is its molecular formula​

Answer 1

Answer:

Let molecular formula be (CH

2

O) n

In one mole of carbohydrate, there is 2n g of hydrogen present.

So, 0.1 mole of carbohydrate there is 2n/1×0.1 g of hydrogen which is equal to 1g

2n/1×0.1= 1

n=5

Molecular formula = C

5

H

10

O

5