Question #70738
1 Answer
Apr 6, 2016
1.667 moles per litre
Explanation:
At the start you have 0.25 litre of 5M solution, so you have 0.25 x 5 = 1.25 moles of HCl.
At the end you have 0.25 + 0.5 = 0.75 litre of solution, and the number of moles of HCl is still 1.25.
So the new concentration or molarity is 1.25 / 0.75 = 1.667 M