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IRINA_888 [86]
3 years ago
6

Which of the following statements concerning equilibrium constants is true? The equilibrium constant of the reverse reaction is

equal in magnitude but opposite in sign of the forward reaction. When related reactions are added together, their equilibrium constants are added together. When the coefficients in a balanced chemical reaction are multiplied by two, the equilibrium constant is multiplied by two. When the coefficients in a balanced chemical reaction are multiplied by two, the equilibrium constant is not affected. When the coefficients in a balanced chemical reaction are multiplied by two, the equilibrium constant is squared.
Chemistry
1 answer:
Brut [27]3 years ago
3 0

Answer:

When the coefficients in a balanced chemical reaction are multiplied by two, the equilibrium constant is not affected.

Explanation:

The equilibrium constant of a reaction is known to remain steady.

Even if all the coefficients of all the species in the reaction are multiplied by two, the value of the equilibrium constant will reamin the same because the equilibrium position will not change as a result of that.

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Nitrogen and water react to form nitrogen monoxide and hydrogen, like this: N2(g) + 2H2O(g) → 2NO(g) +2H2(g) Also, a chemist fin
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Answer:

Kc for this reaction is 0.43

Explanation:

This is the equilibrium:

N₂(g) + 2H₂O(g) → 2NO(g) +2H₂(g)

And we have all the concentration at equilibrium:

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H₂ : 1.3M

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H₂: 1.2M

They are ok, because they are in MOLARITY. (mol/L)

Let's make the expression for Kc

Kc = ( [NO]² . [H₂]² ) / ([N₂] . [H₂O]²)

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Kc = 0.4356

In two significant digits. 0.43

8 0
3 years ago
An object has a density of 10.00 g/mL. If the object has a volume of<br> 25.00 ml, what is the mass?
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Answer:

The answer is

<h2>250 g</h2>

Explanation:

The mass of a substance when given the density and volume can be found by using the formula

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From the question

volume of object = 25 mL

Density = 10 g/mL

The mass of the object is

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We have the final answer as

<h3>250 g</h3>

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