Equilibrium Constants and Percent Composition

The video tutorial explains how to calculate the equilibrium constant (Keq) for a reaction using a given delta G value. It also covers how to determine the percentage of reactants A and B at equilibrium. The process involves using the delta G equation, substituting given values, solving for Keq, and then using the Keq value to find the percentages of A and B. The tutorial provides a step-by-step approach to these calculations, ensuring a clear understanding of the concepts involved.

What is the main objective of the problem discussed in the video?

• To measure the temperature change

• To find the activation energy

• To determine the equilibrium constant and percent composition

• To calculate the rate of reaction

Which formula is used to relate delta G and the equilibrium constant?

• delta G = RT ln Keq

• delta G = -RT Keq

• delta G = RT Keq

• delta G = -RT ln Keq

What is the value of delta G given in the problem?

• 1.8 kJ/mol

• -1.8 kJ/mol

• -1.8 kcal/mol

• 1.8 kcal/mol

What is the calculated value of the natural log of Keq?

• 5.0

• 4.0

• 3.0

• 2.0

What is the equilibrium constant (Keq) calculated in the video?

• 10

• 15

• 25

• 20

How many parts of B are there for every part of A at equilibrium?

• 15 parts of B for 1 part of A

• 20 parts of B for 1 part of A

• 25 parts of B for 1 part of A

• 10 parts of B for 1 part of A

What is the percent composition of B at equilibrium?

• 98%

• 95%

• 92%

• 90%

What is the percent composition of A at equilibrium?

• 7%

• 5%

• 3%

• 10%

If there are 21 parts total, how many parts are A?

• 1 part

• 2 parts

• 3 parts

• 4 parts