Question

How much water should be added in 50g of lead nitrate crystals, so as to obtain the 10% solution? ​

Answer 1

450g of water needed to make 10%of lead nitrate crystal in solution

Explanation:

Here solute is lead nitrate

And the solvent is water

Lead nitrate is =50g

Let the solvent (water)is=x

Solution=x+50

Lead requires 10% of solution

So we get the equation

10/100=50/x+50

Now 100 goes right-hand side and x+50 goes left-hand side

10(x+50)=500*100

10x+500=5000

10x=5000-500

10x=4500

X=4500/10

X=450g

So 450g of water needed to make 10%of lead nitrate crystal in the solution