Under certain conditions, H_2O_2 can act as an oxidizing agent, under other cond
ID: 527236 • Letter: U
Question
Under certain conditions, H_2O_2 can act as an oxidizing agent, under other conditions, as a reducing agent. What is the best theoretical explanation for this? A) H_2 O_2 is a good bleaching agent (B) peroxides are stronger oxidizing agents than the oxides, (C) An will decolorize KMno_4 solution in the presence of an acid will turn black lead sulfide to a white compound. (D) An atom with in a compound can sometimes attain a more stable electronic structure either by gaining or by losing electrons. Which of these changes will produce the most positive voltage for this half reaction in the direction written? Co^2(aq) + 2e^- rightarrow Co_(s) E degree = -0.28 V V (A) increasing the amount of solid Co (B) decreasing the amount of solid Co (C) increasing the concentration of Co^2+= (D) decreasing the concentration of Co^2+ In which case would the least number of faradays of electricity be required for the liberation of 1.0 g of free metal? (A) k from molten KOH (B) Na from molten NaCl (c) Cu from aqueous CuSO_4 (D) Ag from aqueous AgNO_3 A vanadium electrode is oxidized electrically, If the mass of the electrode decreases by 114mg during the passage of 650 coulombs, what is the oxidation state of the vanadium product? (A) +1 (B) +2 (C) +3 (D) +4 A current of 5.00 is passed through an aqueous of chromium(ii) nitrate for 30.0 min .How many grams of chromium metal will be deposited at the cathode? (A) 0.027g (B) 1.62g (C) 4.85g (D) 6.33g What mass of platinum could be plated on an electrode from the electrolysis of a pt(NO_3)_2 solution with a current of 0.500 A for 55.0s? (A) 27.8mg (B) 45.5mg (C) 53.6mg (D)91.0mgExplanation / Answer
25.The correct explanation for the given one is option (D).
Which states that An atom with a compound can sometimes attain more stable electronic structure either by gaining or by loosing electrons.
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