Consider the gas reaction: h2 (g)2(g) 2hi (g) the equilibrium constant at 731 k is 50.3. equal amounts of all three gases (0.100 m) are introduced in a container, calculate the concentration of each gas after the system reaches equilibrium. express your results with the right number of significant figures.

Answer : The concentration of and at equilibrium 0.033 M, 0.033 M and 0.234 M respectively.

Solution :  Given,

Concentration = 0.100 M

The given equilibrium reaction is,

Initially conc.       0.100     0.100       0.100

At equilibrium  (0.100-x)   (0.100-x)  (0.100+2x)

The expression of will be,

Now put all the given values in this expression, we get:

By solving the term x, we get

From the values of 'x' we conclude that, x = 0.158 can not more than initial concentration. So, the value of 'x' which is equal to 0.158 is not consider.

Thus, the concentration of and at equilibrium = (0.100-x) = 0.100 - 0.067 = 0.033 M

The concentration of at equilibrium = (0.100+2x) = 0.100 + 2(0.067) = 0.234 M

the answer is b. dilution

the population of unionid mussels in the hudson river decreased after zebra mussels were introduced. zebra mussels, a nonnative species, competed with the unionid mussels for food. the zebra mussels were able to outcompete the unionid mussels, allowing the zebra mussel population to increase dramatically over six years. the unionid mussel population decreased due to a lack of food.

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