Given the equation representing a system at equilibrium:
N2(g) + 3H2(g) <==> 2NH3(g)
Which statement describes this reaction at equilibrium?
(1) The concentration of N2(g) decreases.
(2) The concentration of N2(g) is constant.
(3) The rate of the reverse reaction decreases.
(4) The rate of the reverse reaction increases.

The quantity of a material, like salt, that is present in a specific amount of tissue or liquid, like blood. When there is less water present, a material becomes more concentrated.

What is equilibrium ?

Chemical equilibrium is characterised as a dynamic state in which the concentration of each reactant remains constant. They may not be equal, but they are not altering. A double arrow in a chemical process signifies an equilibrium state. Products are on the right while reactants are on the left.

Therefore, option (2) is correct - the concentration of N2(g) is constant.

Learn more about concentration from the given link.

https://brainly.com/question/22632970

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