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tester [92]
4 years ago
6

Identify the compound whose solubility decreases with increasing temperature.

Chemistry
1 answer:
Veronika [31]4 years ago
5 0

Answer is: Na₂SO₄ (sodium sulfate).

The solubility of sodium sulfate increases up to 32.38°C and than decreases at higher temperatures, the solubility becomes almost independent of temperature.

At 32.38°C it releases of crystal water and melting of the hydrated salt.

Sodium sulfate is the white, inorganic compound.

Sodium sulfate is highly soluble in water.

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Which energy profile best shows that the enthalpy of formation of CS2 is 89.4 KJ/mol?
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Option C. Energy Profile D

Explanation:

Data obtained from the question include:

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Enthalpy change (ΔH) is simply defined as the difference between the heat of product (Hp) and the heat of reactant (Hr). Mathematically, it is expressed as:

Enthalpy change (ΔH) = Heat of product (Hp) – Heat of reactant (Hr)

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If the enthalpy change (ΔH) is negative, it means that the reactant has a higher heat content than the product.

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