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The solubility curve of KNO ₃ in water is shown below. The amount of KNO ₃ that dissolves in 50 ~g of water at 40^ C is closest to

Options

  1. A100 ~g
  2. B150 ~g
  3. C200 ~g
  4. D50 ~g

Correct answer

A. 100 ~g

Step-by-step solution

At 40^ C solubility is 200 gm per 100 ml (approx) i.e., 100 ml of water contains =200 gm of KNO ₃ (approx) 50 ml of water contains =100 gm (approx)

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