Answer to Question #164865 in General Chemistry for joyce mae callao

Question

What amount of water is needed to dissolve 450 g of Pb(NO 3 ) 2 at40°C?

Answer 1

Pb(NO3)2 is a highly soluble compound

Maximum 530 g of Pb(NO3)2 can get solvated in 1 L of water at ~40°C (standard value)

So, 1 g of Pb(NO3)2 can get solvated in (1/530) L of water.

450 g of Pb(NO3)2 can get solvated in (1×450/530) L of water.

= 0.85 L

Hence, at ~40°C to dissolve 450 g of Pb(NO3)2, 0.85 L of water is needed.