# Question #2a46a

##### 1 Answer

Feb 10, 2017

#### Answer:

6.7 mol/litre

#### Explanation:

You need to work out the total number of moles of solute in the two portions of solution, and then divide by the total volume of the two solutions mixed, in order to get the final molarity in mol/l.

Molarity

Therefore

In the first solution, therefore,

In the second solution,

Total number of moles is 0.65 + 1.36 = 2.01 moles. Total volume is 130 + 170 = 300 ml = 0.3 litre.

So final molarity is 2.01 / 0.3 = 6.7 mol/l.