Question

who much water should be added 20 gram of salt to obtain 20 persent salt solution?​

Answer 1

Answer:

80 Gram

Step-by-step explanation:

concentration of solution =20%

Mass of solute( common salt)=20g

take amount of water as x .

So, mass of the solvent = (20+x)

We know that the ,

concentration of solution = (mass of solute/mass of solution)×100

So from the equation we get,

20=(20/20+x)×100

20+x=20×5 ( we devide the both side by 20)

x= 100-20

x = 80 g

So the anwer is, 80g of water should be added to 20g of common salt to obtain 20% salt solution..