Which compound decreases in solubility as the temperature of the solution is increased from 10c to 50c

The solubility of NH3 decreases with increase in temperature.

Solubility refers to the ability of a substance to dissolve in a solvent. The greatest factor that affect solubility is temperature. The solubility of solids increases with increase in temperature while the solubility of gases decreases with an increase in temperature.

Hence, as the temperature increases from 10°C to 50°C, the solubility of NH3 which is a gas decreases rapidly.

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Explanation:

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The key to answer this question is to realize that NH₃ is a gas at the given temperatures.

The solutilibty of all gases always decreases when the temperature increases. Thus, the solubility of NH₃ will decrease when the temperature rises from 10ºC to 50ºC.

The reason for this behavior of gases is that the temperature and the kinetic energy of the particles are directly proportional. Thus, as the temperature incrases the kinetic energy of the particles increases.

As the kinetic energy of the molecules of gas in the liquid solution increases, their speeds also increase, meaning that more molecules will escape from the solution to the gas phase, leaving the soluton with less dissolved gas molecules.

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