The Reaction Quotient Video Lessons

Example

# Problem: At a particular temperature, K = 1.00 x 102 for the reactionH2(g) + I2(g) ⇌ 2HI(g)In an experiment, 1.00 mole of H2, 1.00 mole of I2, and 1.00 mole of HI are introduced into a 1.00-L container. Calculate the concentrations of all species when equilibrium is reached.

###### FREE Expert Solution

H2(g) + I2(g) ⇌ 2 HI(g)          K = 1.00 x 102

Step 1: Calculate the concentrations of the reactants and products.

Recall molarity

[H2] = 1.00 M

[I2] = 1.00 M

[HI] = 1.00 M

Step 2: Calculate the reaction quotient.

$\overline{){\mathbf{Q}}{\mathbf{=}}\frac{\mathbf{products}}{\mathbf{reactants}}}$

$\overline{){\mathbf{Q}}{\mathbf{=}}\frac{\mathbf{products}}{\mathbf{reactants}}}$

$\mathbf{Q}\mathbf{=}\frac{{\mathbf{\left[}\mathbf{HI}\mathbf{\right]}}^{\mathbf{2}}}{\mathbf{\left[}{\mathbf{H}}_{\mathbf{2}}\mathbf{\right]}\mathbf{\left[}{\mathbf{I}}_{\mathbf{2}}\mathbf{\right]}}\phantom{\rule{0ex}{0ex}}\mathbf{Q}\mathbf{=}\frac{{\mathbf{\left(}\mathbf{1}\mathbf{.}\mathbf{00}\mathbf{\right)}}^{\mathbf{2}}}{\mathbf{\left(}\mathbf{1}\mathbf{.}\mathbf{00}\mathbf{\right)}\mathbf{\left(}\mathbf{1}\mathbf{.}\mathbf{00}\mathbf{\right)}}$

Q = 1.00

Q < K → the reaction shifts in the forward direction to reach equilibrium

Step 3: Construct an ICE chart for the equilibrium reaction.

Step 4: Calculate the change (x) in the reaction using the equilibrium constant.

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###### Problem Details

At a particular temperature, K = 1.00 x 102 for the reaction

H2(g) + I2(g) ⇌ 2HI(g)

In an experiment, 1.00 mole of H2, 1.00 mole of I2, and 1.00 mole of HI are introduced into a 1.00-L container. Calculate the concentrations of all species when equilibrium is reached.

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the The Reaction Quotient concept. You can view video lessons to learn The Reaction Quotient. Or if you need more The Reaction Quotient practice, you can also practice The Reaction Quotient practice problems.

What professor is this problem relevant for?

Based on our data, we think this problem is relevant for Professor Hirsh's class at TCNJ.

What textbook is this problem found in?

Our data indicates that this problem or a close variation was asked in Chemistry: An Atoms First Approach - Zumdahl Atoms 1st 2nd Edition. You can also practice Chemistry: An Atoms First Approach - Zumdahl Atoms 1st 2nd Edition practice problems.