Question

How many kilograms of water must be added to 2. 5 g of methanol (CH30H) to make a 3. 0 m solution?

Answer 1

Given: 150ml of 2.0M CH

3

​

OH is to be prepared.

Number of moles= M×Volume inL=2.0×0.150=0.3

Molar mass of CH

3

​

OH=32.04g/mol

∴ Weight of CH

3

​

OH to be added= 32.04×0.3=9.61g

Explanation: