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2 years ago

Any process with a negative change in enthalpy and a positive change in entropy will be:_______.

Chemistry

1 answer:

harkovskaia [24]2 years ago

5 0

Answer:

a. spontaneous

Explanation:

Hello,

In this case, since the Gibbs free energy is a metric that allows us to know whether a chemical reaction is spontaneous (Gibbs free energy less than 0) or nonspontaneous (Gibbs free energy greater than 0) we can mathematically define it as:

$\Delta G=\Delta H-T\Delta S$

Thus, if the enthalpy is negative and the entropy is negative, the subtraction become always negative, for which the Gibbs free energy is negative as well, therefore, based on the aforementioned, any process with a negative change in enthalpy and a positive change in entropy will be: a. spontaneous.

Best regards.

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2 years ago

A solution contains 0.021 M Cl and 0.017 M I. A solution containing copper (I) ions is added to selectively precipitate one of t

lidiya [134]

Answer: Copper (I) iodide will precipitate first.

Explanation:

We are given:

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Solubility product is defined as the product of concentration of ions present in a solution each raised to the power its stoichiometric ratio.

For CuCl:

$K_{sp}=[Cu^+][Cl^-]$

Putting values in above equation, we get:

$1.0\times 10^{-6}=[Cu^+]\times 0.021$

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$K_{sp}=[Cu^+][I^-]$

Putting values in above equation, we get:

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2 years ago

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Flauer [41]

The answer for the following answer is explained below.

The answer is NH_{4} ^{+}

Explanation:

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Here,

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So therefore the Bronsted-Lowry acid is NH_{4} ^{+}.

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2 years ago