Grade 11 Chemistry Weekend Practice 1: Energy and Equilibrium | Brief Solutions
Use the summaries to locate questions in the original paper. Select a question or its button to reveal the answer. Calculations and proofs include the essential steps.
Labels: E = worked example, C = class practice, H = homework; P1-P4 refer to original PDF pages. Other labels follow the original question or section numbering.
B
B
C
A, D
$0<T<409.45\ \mathrm K$
A
A, B, D
$0.025\ \mathrm{mol\,L^{-1}\,min^{-1}}$
Increases.
$\alpha_a<\alpha_b<\alpha_c$
$v_{\mathrm f}>v_{\mathrm r}$, because $Q=1.2^2/0.47^2\approx6.52<K$ and the reaction proceeds forward.
C (curve III)
D
A
The exothermic main equilibrium shifts backward; catalyst activity falls; the endothermic CO-forming side reaction is favored and consumes feed.
Higher methanol selectivity and fewer by-products; coupled reaction and separation simplify processing and lower energy use.