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GenaCL600 [577]
4 years ago
7

When hydrochloric acid reacts with potassium hydroxide solution, the following reaction occurs. HCl (aq) + KOH (aq) H2O (l) + KC

l (aq) The reaction gives off heat energy, so it is an reaction.
Chemistry
2 answers:
gtnhenbr [62]4 years ago
8 0

A reaction that gives off heat energy is called Exothermic. (Answer).

A reaction that absorbs heat from the surroundings is called endothermic.

vaieri [72.5K]4 years ago
5 0

Answer: Exothermic

Explanation:

Exothermic reactions are defined as the reactions in which energy of the product is lesser than the energy of the reactants. The total energy is released in the form of heat and \Delta H for the reaction comes out to be negative.

Endothermic reactions are defined as the reactions in which energy of the product is greater than the energy of the reactants. The total energy is absorbed in the form of heat and \Delta H for the reaction comes out to be positive.

HCl(aq)+NaOH(aq)\rightarrow KCl(aq)+H_2O(aq) is an example of neutralization as acid and base combines to form salt and water and exothermic reaction as it releases heat in the reaction.

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PLEASE HELP ME!!
blagie [28]

1, When temperature is increased the volume will also increase. this is because the particles will gain kinetic energy and bombard the walls of the container of the gas at a higher frequency, therefore, for the pressure to remain constant as per Charles' law, the volume will have to increase so that the rate of bombardment remains constant. This is explained by the Charles law which states that the volume of a gas is directly proportional to the absolute temperature provided pressure remains constant.

2. When temperature is Decreased the volume will also Decrease. this is because the particles will loose kinetic energy and bombard the walls of the container of the gas less frequently, therefore, for the pressure to remain constant as per Charles' law, the volume will have to reduce so that the rate of bombardment remains constant. This is explained by the Charles law which states that the volume of a gas is directly proportional to the absolute temperature provided pressure remains constant.

3. When temperature is increased the pressure will increase. This is because the gas particles gain kinetic energy and bombard the walls of the container more frequently. this is according to Pressure law which states that for a constant volume of a gas the pressure is directly proportional to absolute temperature

4. When temperature is decreased, pressure will decrease, This is because the gas particles lose kinetic energy and bombard the walls of the container less frequently. this is according to Pressure law which states that for a constant volume of a gas the pressure is directly proportional to absolute temperature

5. When particles are added, pressure will increase. This is because the bombardment per unit area also increases. Boyles law explains this, that at fixed temperature the volume of a gas is inversely proportional to the pressure.

6. When particles are removed, the pressure will decrease. This is because the bombardment per unit area also decreases. Boyle's law explains this, that at fixed temperature the volume of a gas is inversely proportional to the pressure.

7 0
3 years ago
Question Determine the concentration of hydroxide ions for a 25 °C solution with a pH of 8.22. . Your answer should contain 2 si
mariarad [96]

Answer:

[OH^-]=1.7x10^{-6}M

Explanation:

Hello!

In this case, since the pOH of a solution can be computed when knowing the pH as shown below:

pH+pOH=14\\\\pOH=14-8.22=5.78

And therefore, the concentration of hydroxide ions based on the definition of pH:

[OH^-]=10^{-pOH}

In such a way, we obtain:

[OH^-]=10^{-5.78}=1.7x10^{-6}M

Best regards

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inna [77]
The correct answer is D. Frequency. I just took the test. 
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Explanation:

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