Calculating Reaction Quotient and Free Energy

The video tutorial explains how to calculate the free energy change for a chemical reaction under non-standard conditions. It begins by introducing the concept of free energy and the significance of non-standard conditions, such as temperature and pressure variations. The tutorial then provides a step-by-step guide to calculating the free energy change using the equation Delta G = Delta G° + RT ln Q, where Q is the reaction quotient. The process involves converting units, calculating the reaction quotient using pressures, and applying the formula to find the final Delta G value.

What is the standard free energy change for the given reaction?

• 15.0 kilojoules per mole

• 33.0 kilojoules per mole

• 25.0 kilojoules per mole

• 40.0 kilojoules per mole

Why are the given conditions considered non-standard?

• Because the pressure is below 1 atmosphere

• Because the temperature is above 100 degrees Celsius

• Because the reaction is at equilibrium

• Because the conditions are not at equilibrium and not at standard temperature

Which equation is used to calculate the free energy change under non-standard conditions?

• Delta G = Delta H - T Delta S

• Delta G = Delta G° + RT ln Q

• Delta G = RT ln K

• Delta G = Delta G° - RT ln K

What is the value of the gas constant R used in the calculation?

• 8.314 joules per mole K

• 0.0821 liters atm per mole K

• 8.314 kilojoules per mole K

• 0.008314 kilojoules per mole K

How is the reaction quotient (Q) calculated for this reaction?

• By using the concentrations of reactants and products

• By using the pressures of reactants and products

• By using the volumes of reactants and products

• By using the moles of reactants and products

What is the pressure of hydrogen (H2) used in the calculation of Q?

• 12.9 atmospheres

• 1.0 atmospheres

• 0.250 atmospheres

• 0.870 atmospheres

What is the calculated value of the reaction quotient (Q)?

• 8.17 x 10^-5

• 1.00 x 10^-3

• 2.50 x 10^-4

• 5.00 x 10^-2

What is the final calculated value of Delta G for the reaction?

• 15.0 kilojoules per mole

• 33.0 kilojoules per mole

• 23.3 kilojoules per mole

• 9.7 kilojoules per mole

What is the temperature in Kelvin used in the calculation?

• 350 K

• 310 K

• 298 K

• 273 K

What is the significance of the calculated Delta G value?

• It suggests the reaction is non-spontaneous under the given conditions

• It means the reaction has reached completion

• It shows the reaction is spontaneous under the given conditions

• It indicates the reaction is at equilibrium