Question

“Calculate the volume of pure water that dilutes 100 ml of 12 M NaOH to 4.75 M.”

Answer 1

The volume of water to make 4.75 M of NaOH is 252.6 ml

Step-by-step explanation:

For 12M NaOH:

`12 = (moles of NaOH)/(Initial Volume of water)`

`12 = (moles)/(100)\\ \\moles, n = 1200`

For 4.75 NaOH:

`4.75 = (moles of NaOH)/(Final Volume of water)`

On substituting, n = 1200 in the above formula:

`4.75 = (1200)/(Final volume, V) \\\\V = (1200)/(4.75) \\\\V = 252.6 ml`

Therefore, the volume of water to make 4.75 M of NaOH is 252.6 ml