Question

A salt solution is obtained by dissolving 40g of salt in 60g of water. what must be done to make this salt solution 50%? ​

Answer 1

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

Answer 2

To make a 50% of salt solution 10g of salt should be added.

GIVEN: A salt solution is obtained by dissolving 40g of salt in 60g of water.

TO FIND: Salt to be added A salt solution is obtained by dissolving 40g of salt in 60g of water.

SOLUTION:

As we are given in the question,

For making the solution,

40g of salt is to be added to 60g of water.

As we know,

Concentration = salt wt / solution wt

= 40 / (40+60)

= 40/100

= 40%

Therefore,

To make a 50% of salt solution 10g of salt should be added.

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