Directions: Are based on the graph given below: Solubility-Temperature relationships for various salts. (The Y-axis denotes Solubility (kg/litre of water))
What is the correct answer?
4
Approximately, how many kg of Potassium Nitrate can be dissolved in 10 litres of water at 30°C?
A. 0.04
B. 0.4
C. 4
D. 0.35
Correct Answer :
C. 4
At 30°C, solubility of potassium nitrate is 0.38 kg./lt. Hence in 10 lt. 3.8 kg., Approx. = 4 kg. of potassium nitrate can be dissolved.