18. The solubility of Caso4
(1) increases with increase in temperature,
(2) decreases with increase in temperature.
(3) increases and then decreases with increase in temperature.
(4) decreases and then increases with increase in temperature.
Answers
Answer:
x
Q no. 1
The reason is quite simple. The solubility of KNO3 in water increases with the increase in temperature since dissolution of KNO3 in water is an endothermic process. The solubility of CaSO4 in water decreases with the increase in temperature since dissolution of CaSO4 in water is an exothermic process.
Q no. 2
it depends on the sign of the enthalpy of reaction, in this case the enthalpy of dissolution. It is well known to us that the Solubility of solute in a solution increases with the increase in the temperature because, when the temperature increases the molecules of the solvent gain more kinetic energy .
Q no. 3
The solubility of CaSO4 in water decreases with the increase in temperature since solubility of CaSO4 in water is an exothermic process. An endothermic process or exothermic process is any process which releases or absorbs energy to or from its surroundings, usually in the form of heat.
Q no. 4
The solubility values of CaSO4 phase increase slightly as the temperature increases from 25 to 60 .
above is the answers for all four questions.
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