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svetlana [45]
3 years ago
7

Using Le Chatelier’s principle, predict which equilibrium system below decrease the concentration of the reactant (H2CO3) as a r

esult of the stress (change) added to the system.
The reaction being studied is: H2CO3(aq) H+(aq) + HCO3-(aq)

a. decrease H+ concentration by adding NaOH.
b. a catalyst is added.
c. Add more HCO3- by adding NaHCO3(s)
Chemistry
2 answers:
Diano4ka-milaya [45]3 years ago
8 0

Answer:

decrease H+ concentration by adding NaOH.

Explanation:

H2CO3→ H+ + HCO3-

A decrease in H^+ concentration will lead to a decrease of the H2CO3 concentration since more of it will now dissociate to the bicarbonate ion (equilibrium position shifts towards the right). This is because as equilibrium position shifts towards the right as the hydrogen ions are removed it decreases the concentration of the carbonic acid in the system as shown by the equation above.

seropon [69]3 years ago
4 0

Answer:

The correct answer is c add more HCO3- by adding NaHCO3.

Explanation:

The reaction mentioned in the question is carried out by bicarbonate buffer system of our body to maintain the normal acid  base balance.

         Now concentration of the reactant (H2C03) is decreased then NaHCO3 should be added which undergo breakdown to release bicarbonate ions(HCO3-).

        The released bicarbonate ions then reacts with H+ to form Carbonic acid(H2CO3).Thus homeostasis of H2CO3 is maintained.

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Consider the reaction: <img src="https://tex.z-dn.net/?f=NiO%28s%29%2BCO%28g%29%20%5Crightleftharpoons%20Ni%28s%29%2BCO_2%28g%29
sasho [114]

Answer:

Molar concentration of CO₂ in equilibrium is 0.17996M

Explanation:

Based on the reaction:

NiO(s) + CO(g) ⇆ Ni(s) + CO₂(g)

kc is defined as:

kc = [CO₂] / [CO] = 4.0x10³ <em>(1)</em>

As initial concentration of CO is 0.18M, the concentrations in equilibrium are:

[CO] = 0.18000M - x

[CO₂] = x

Replacing in (1):

4.0x10³ = x / (0.18000-x)

720 - 4000x = x

720 = 4001x

x = 0.17996

Thus, concentrations in equilibrium are:

[CO] = 0.18000M - 0.17996 = 4.0x10⁻⁵

[CO₂] = x = <em>0.17996M</em>

<em></em>

Thus, <em>molar concentration of CO₂ in equilibrium is 0.17996M</em>

<em />

I hope it helps!

5 0
3 years ago
What is the noble gas configuration of Oganesson?​
Fittoniya [83]

Answer:

5f14 6d10 7s2 7p6

Explanation:

This is because oganesson is a noble gas and element of group 18 which does not occur or is not produced naturally. It is produced in an experiment. It is a gas at room temperature and it has atomic number of 118. It is harmful and a radioactive gas due to it's radioactive properties and it is produced in small amound

6 0
3 years ago
An atom has 14 electrons. write its electronic charge
melomori [17]

Answer: 0

Explanation:

Atoms have neutral charge.

8 0
2 years ago
What refers to the effect of gravity
Grace [21]

Answer: D

Explanation:

Weight by definition is mass multiplied by the acceleration of gravity. So, weight is the force of gravity

4 0
2 years ago
Hydrochloric acid (HCl) is a strong acid that completely ionizes in an aqueous solution. If its [H3O+] concentration is 0.023 M,
notka56 [123]

Answer:

pH = 1.64

Explanation:

7 0
3 years ago
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