Question

How many ml of 0.5M of HNO3 would be needed to react with 85ml of 0.75M of KOH

Answer 1

Answer: 127.5ml

Step-by-step explanation:

To calculate the volume of acid, we use the equation given by neutralization reaction:

`n_1M_1V_1=n_2M_2V_2`

where,

`n_1,M_1\text{ and }V_1` are the n-factor, molarity and volume of acid which is
`HNO_3`

`n_2,M_2\text{ and }V_2` are the n-factor, molarity and volume of base which is KOH.

We are given:

`n_1=1\\M_1=0.5M\\V_1=?mL\\n_2=1\\M_2=0.75M\\V_2=85mL`

Putting values in above equation, we get:

`1* 0.5* V_1=1* 0.75* 85\\\\V_1=127.5mL`

Thus 127.5 ml of 0.5M of HNO3 would be needed to react with 85ml of 0.75M of KOH