What salt results from the neutralization of phosphoric acid with potassium hydroxide?

Chemistry

2 answers:

seraphim [82]3 years ago

5 0

H3PO4+3KOH----->
K3PO4+3H2O

Tamiku [17]3 years ago

3 0

<u>Answer:</u> The salt obtained is potassium phosphate.

<u>Explanation:</u>

When an acid reacts with a base and leads to the formation of a salt and water, it is known as neutralization reaction. The general chemical equation used to represent this reaction is:

$HA+BOH\rightarrow BA+H_2O$

The salt formed from the reaction of phosphoric acid and potassium hydroxide is given by the equation:

$2H_3PO_4+6KOH\rightarrow 2K_3PO_4+6H_2O$

By Stoichiometry of the reaction:

2 moles of phosphoric acid reacts with 6 moles of potassium hydroxide to produce 2 moles of potassium phosphate and 6 moles of water.

Hence, the salt formed is potassium phosphate.

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Which of the following results in an increase in the entropy? (4 points)

Dima020 [189]

Dissolving sugar in water results in an increase in the entropy.

Hence, Option (D) is correct answer.

<h3>What is Entropy ?</h3>

Measurement of randomness of a system is called entropy. It is an extensive property. It is a state function. Unit of entropy is JK⁻¹ mol⁻¹.

Now lets check all options one by one

Option (A): Freezing water

Freezing water decreases the entropy because here second law of thermodynamics does not violate.

So it is incorrect option

Option (B): Cooling water

Cooling water does not increases entropy because entropy increases when solid melts to give liquid.

So it is incorrect option

Option (C): Condensing water vapour

In Condensing water vapour the temperature of liquid phase decreases and thus kinetic energy decreases. The randomness will decrease and hence entropy will also decrease.

So it is incorrect option.

Option (D): Dissolving sugar in solute

In dissolving sugar in solute the solid dissociates to ions and the randomness will increase and hence entropy will also increase.

So it is correct option

Thus from the above conclusion we can say that Dissolving sugar in water results in an increase in the entropy.

Hence, Option (D) is correct answer.

Learn more about the Entropy here: brainly.com/question/1477087

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