The solution that contains 12 g of sucrose in 15 g of water.
You can determine how concentrated a solution is by determining its percent concentration by mass,
This means that the two solutions will be
This means that the second solution has more sucrose per 100 g than the first solution. More specifically, you get
- 40 g sucrose for every 100 g solution
- 44.4 g sucrose for every 100 g solution
Therefore, solution 2 is more concentrated.