C(s) + H2O(g) → H2(g) + CO2(g) ΔG for the reaction above at 1300k is -43KJ. What becomes of this reaction at this temperature?
A. not feasible B. at equilibrium C. feasible D. exothermic Correct Answer: Option C – feasible
What current will deposit 3.25g of zinc in 2hrs? [Zn = 65, F = 96500 mol-]
A. 3.25A B. 2.00A C. 1.34A D. 0.67A Correct Answer: Option C – 1.34A
Which of the following metals is purified commercially by electrolysis?
A. Zn B. Fe C. Sn D. Cu Correct Answer: Option D – Cu
The oxidation state of Cr in K2Cr2O7 is?
A. +7 B. +6 C. +5 D. 4 Correct Answer: Option B = +6
The colour changes observed when testing for reducing agents using acidified potassium heptaoxodichromate (IV) solution is?
A. yellow to purple B. orange to green C. green to orange D. purple to yellow Correct Answer: Option B – orange to greenProducts
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