A solution is made by dissolving 17.5 g KCl in 136.0 g H2O. What mass of the solution in this exercise contains 2.45 g KCl?

Answer 1

Hi Liz W.,

The total mass of the solution is 17.5 g KCl + 136.0 g H₂O = 153.5 g sol. To find the mass of solution that contains 2.45 g KCl we know there is 17.5 g KCl in 153.5 g sol.

2.45 g KCl*(153 g sol/17.5 g KCl) = 21.5 g sol.

I hope this helps, Joe.