Given the reaction below:

2cu + 8hno3 --> 3cu(no3)2 +2no + 4h2o

the mole ratio of no produced to hno3 reacted is

a. 4: 1

b. 1: 4

c. 2: 3

d. 2: 3

The given equation is  is

this is not balanced

The balanced equation will be:

Now as per it if we are using eight moles of HNO3 we are getting two moles of NO

so for each mole of NO we have to take four moles of HNO3

Hence the mole ratio of NO produced to HNO3 reacted will be = 1:4