# A solution contains 10 g of KNO3 per 100 g of water at 30˚C. Is the solution unsaturated, saturated or supersaturated?

A solution contains 10 g of KNO3 per 100 g of water at 30˚C. Is the solution unsaturated, saturated or supersaturated?

## This Post Has 3 Comments

1. Expert says:

B.) falsehope this !

2. brandon1748 says:

Explanation:    As you can see, potassium nitrate has s solubility of about

67 g / 100g H

2

O

at

40

C

. This means that at

40

C

, a saturated potassium nitrate solution will contain

67 g

of dissolved salt for every

10 0g

of water.

You know that at this temperature, your solution contains

35 g

of potassium nitrate in

100 g

of water. This solution will be unsaturated because it contains less potassium nitrate than the maximum amount that can be dissolved.

In order to make a saturated solution, you must get the total mass of potassium nitrate to

67 g

, which means that you must add

mass of KNO

3

a

=

67 g

35 g

=

¯¯¯¯¯¯¯¯¯¯¯¯¯¯¯

a

a

32 g

a

a

−−−−−−−−

3. Expert says: