Welcome to the article The solubility of potassium nitrate KNO₃ at 313 K is 62 g per 100 g of water 1 What mass of potassium nitrate would be. On this page, you will learn the essential and logical steps to better understand the topic being discussed. We hope the information provided helps you gain valuable insights and is easy to follow. Let’s begin the discussion!
Answer :
Final answer:
Approximately 31 g of KNO₃ would be needed to produce a saturated solution in 50 g of water at 313 K. The solubility of KNO₃ increases significantly with an increase in temperature.
Explanation:
To determine the mass of KNO₃ needed to produce a saturated solution in 50 g of water at 313 K, we need to refer to the solubility curve for KNO₃. According to the curve, at 313 K, the solubility of KNO₃ is 62 g. This means that 62 g of KNO₃ can dissolve in 100 g of water at 313 K.
To find the mass required for 50 g of water, we can use the proportion:
Mass of KNO₃ / Mass of water = Solubility of KNO₃ / 100 g
Substituting the values, we get:
Mass of KNO₃ / 50 g = 62 g / 100 g
Mass of KNO₃ = (62 g / 100 g) × 50 g
= 31 g
Therefore, approximately 31 g of KNO₃ would be needed to produce a saturated solution in 50 g of water at 313 K.
The effect of change in temperature on the solubility of a salt varies depending on the salt. In the case of KNO₃, an increase in temperature from 30°C to 60°C significantly increases the solubility of the salt. This is because the solubility curve for KNO₃ is steep, indicating that the solubility of KNO₃ increases rapidly with temperature.
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