Question

The solubility curve of $KN{O}_3$ in water is shown below
The amount of $KN{O}_3$ that dissolves in $50g$ of water at ${40}^{\circ }C$ is closest to :

• A. $100g$
• B. $150g$
• C. $200g$
• D. $50g$

Answer 1

The correct option is A $100g$

According to the graph solubility ${40}^{\circ }$ is approx. $200g$ per $100ml$ . For $50ml$, amount is $100g$ approx.