Gce Model Questions Vol1 2025 Chemistry Question 50
Practice objective / multiple choice question 50 from the 2025 Gce Model Questions Vol1 Chemistry examination.
A power plant generates 500 MWh of electricity per day by burning natural gas (\(\mathrm{CH_{4}}\)). The combustion reaction is \(\mathrm{CH_{4}+2\,O_{2}\rightarrow CO_{2}+2\,H_{2}O}\). The plant operates at 40 % thermal efficiency and the lower heating value of \(\mathrm{CH_{4}}\) is 50 MJ kg⁻¹. \(\text{(i)}\) Calculate the mass of \(\mathrm{CO_{2}}\) emitted each day. \(\text{(ii)}\) If a carbon‑capture system removes 85 % of the \(\mathrm{CO_{2}}\) but consumes an additional 5 % of the plant's electricity output, determine the net \(\mathrm{CO_{2}}\) emitted per day after capture (in tonnes).
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This is Gce Model Questions Vol1 2025 Chemistry Question 50. It is one of the objective questions from the 2025 Gce Model Questions Vol1 Chemistry examination.
Difficulty level: Hard .
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