Thermochemistry Quiz

What does a positive Q indicate in a thermochemical reaction?

• Heat is being gained by the system.

• The system is at equilibrium.

• Heat is being lost by the system.

• The reaction is exothermic.

In the formula Q = m * ΔT * Cp, what does 'm' represent?

• Molarity of the solution

• Molecular weight

• Moles of the substance

• Mass of the substance

How is the change in temperature (ΔT) calculated?

• Initial temperature minus final temperature

• Final temperature minus initial temperature

• Average of initial and final temperatures

• Sum of initial and final temperatures

What is the specific heat capacity (Cp) of water used in the example problem?

• 4.18 J/g°C

• 3.47 J/g°C

• 2.09 J/g°C

• 1.00 J/g°C

In the example problem, what is the change in temperature (ΔT) when water is heated from 16.8°C to 39.2°C?

• 20.0°C

• 22.4°C

• 18.4°C

• 25.0°C