Skip to main content

Back to the full dot-point answer

ScotlandChemistryQuick questions

Area 1: Inorganic and Physical Chemistry

Quick questions on Reaction feasibility: entropy and free energy - SQA Advanced Higher Chemistry

3short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.

What is q1?
Show answer
State whether the entropy change is positive or negative for 2H2(g)+O2(g)→2H2O(l)2\text{H}_2(g) + \text{O}_2(g) \rightarrow 2\text{H}_2\text{O}(l), and why. [2 marks]
What is q2?
Show answer
A reaction has ΔH=+20 kJ mol−1\Delta H = +20 \text{ kJ mol}^{-1} and ΔS=+50 J K−1mol−1\Delta S = +50 \text{ J K}^{-1}\text{mol}^{-1}. Find the temperature above which it is feasible. [2 marks]
What is q3?
Show answer
State what a negative value of ΔG\Delta G tells you, and what it does not tell you, about a reaction. [2 marks]

Have a question we have not covered?

This dot-point answer is short enough that we have not extracted many short questions yet. Read the full dot-point answer or ask Mo, our study assistant, in the chat for follow ups.

All ChemistryQ&A pages