Question

A salt solution is obtained by dissolving 40 g of salt in 60 g of water. what must be done to make this salt solution 50% (w/w).

Answer 1

Answer:

10g

Explanation:

concentration = salt wt / solution wt

= 40 / (40+60)

= 40/100

= 40%

i,e...40g salt in 100g solution

now to make 50% ....add 10g salt