A solution contains 14 grams of KCl in 100. grams of water at 40ºC. What is the minimum amount of KCl that must be added to make this a saturated solution?

A) 14 g
B) 19 g
C) 25 g
D) 44 g

Option C is correct

Explanation:

Step 1: Data given

Mass of KCl in 100 grams water = 14 grams

Temperature = 40.0 °C

At 40.0°C  we need 40.1 grams of KCl in 100 grams of water to have a saturated solution

Step 2: Calculate mass KCl we have to add

Mass KCl = 40.1 grams - 14.0 grams = 26.1 grams

We have to add 26.1 grams oof KCl to have a saturated solution

Since 25 grams is the closest to this answer. Option C is correct

When adding 44 grams of KCl the solution will be oversaturated

the product of the pressure and volume is also constant

aquifers are bounded above and below by impermeable rock. the driving force of groundwater movement in confined aquifers is pressure, rather than gravity.