Which of the following hydrogen halides the highest entropy value?
A. HF B. HCl C. HBr D. HI Correct Answer: Option A – HF
The mass of silver deposited when a current of 10A is passed through a solution of silver salt for 4830s is? [Ag = 108, F = 96500 c mol-1]
A. 108.0g B. 54.0g C. 27.0g D. 13.5g Correct Answer: Option B – 54.0g Explanation Ag + e → Ag+ If w 96500 C deposit 108g of silver ∴ 10 * 4830 will deposit (10 * 4830 * 108)/96500 = 5216400/96500 =...
Which of the following acts as both reducing and oxidized agent?
A. H2 B. SO2 C. H2S D. CO2 Correct Answer: Option B – SO2
ZnO(s) + CO(g) → Zn(s) + CO2(g). What happens to Zinc?
A. decomposed B. displaced C. oxidized D. reduced Correct Answer: Option D – reduced
The oxidation state of chlorine in HClO4 is?
A. -5 B. -1 C. +1 D. +7 Correct Answer: Option D = +7Products
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