Che2.1.3.1 - Thermochemical Principles and Enthalpy Change - QUIZ
Che2.1.3.1 · Thermochemical Principles and Enthalpy Change
Edexcel International AS Level Chemistry
Questions
10 Questions
Practice 10 questions on Che2.1.3.1 - Thermochemical Principles and Enthalpy Change at Edexcel International AS Level Chemistry. Free AI-generated quiz on uNotes — track your score, retake anytime.
Define specific heat capacity (c) as described in the text.
2Which of the following conditions must be met for a reaction to be classified as a standard enthalpy of formation (ΔfH°)?
3A student adds 1.0 g of NaOH to 40 mL of water. The total mass is 41 g, the specific heat capacity is 4.18 J g⁻¹ °C⁻¹, and the temperature rise is 3 °C. Calculate the heat energy (q) transferred to the solution in Joules.
4Which of the following are true regarding the sign conventions for heat (q) and enthalpy change (ΔrH) in a calorimetry experiment?
5Under standard conditions, what is the assigned enthalpy value for all elements in their standard states?
6Which statements correctly describe the standard enthalpy of combustion (ΔcH°)?
7Calculate the standard enthalpy of reaction (ΔrH°) in kJ mol⁻¹ if 0.025 mol of NaOH produces 514 J of heat upon dissolving.
8According to the document, why does the ΔfH° of CO2(g) equal the ΔcH° of C(s)?
9Which of the following are examples of materials that can be used to construct a simple calorimeter according to the text?
10In the thermochemical equation '1/2 N2 (g) + 1 1/2 Cl2 (g) -> NCl3 (l) ΔfH° = +230 kJ mol⁻¹', what does the '+' sign indicate?
