Question

A chemical compound that contains $$26$$% nitrogen and $$74$$% oxygen has an atomic mass of $$108\ g/mol$$. What is the molecular formula of this compound?

A
N3O4
B
NO2
C
NO6
D
N2O5

Solution

The correct option is D $${ N }_{ 2 }{ O }_{ 5 }$$Given, $$\%$$ N in compound $$= 26\%,$$$$\%$$ O in compound $$= 74\%,$$So, mass of nitrogen in $$1\space mole = \dfrac{26}{100} \times 108 \approx 28\space g$$Mass of oxygen in $$1\space mole = \dfrac{74}{100} \times 108 \approx 80\space g$$So, no. of moles of nitrogen $$= \dfrac{28}{14} = 2\space moles$$No. of moles of nitrogen $$= \dfrac{80}{16} = 5\space moles$$So, the molecular formula is $$N_2O_5$$Chemistry

Suggest Corrections

0

Similar questions
View More

People also searched for
View More