30. A positive standard reduction potential versus the standard hydrogen electro
ID: 699018 • Letter: 3
Question
30. A positive standard reduction potential versus the standard hydrogen electrode (SH a. A greater tendency of the half-reaction towards reduction in water b. A greater tendency of the half-reaction towards oxidation in water c. It depends on the specific half-reaction d. None of the above is true E) implies: 31. The salt bridge provides anions to the cathode half cell and cations to the a a. True b. False 32. In a voltaic cell: a. Reduction occurs at the anode and oxidation occurs at the cathode b. Oxidation c. Reduction occurs at both electrodes d. Oxidation occurs at both electrodes occurs at the anode and reduction occurs at the cathode 33. Which of the following is not a nuclear particle: a. b. He C. 34, A particle is a high energy helium nucleus. a. True b. False 35. A radioactive nucleus a. Is unstable b. Is stable 36. A positron has a mass equal to an electron but has a positive charge a. True - b. False 37. The half-life of a radioactive nucleus: a. Obeys first-order kinetics b. Obeys second-order kinetics 38. State if Fe(NO,), is acidic, basic, or neutral in water? a. Acidic b. Basic c. Neutral 39. State if Fe(NO,), is acidic, basic, or neutral in water? a. Acidic b. Basic C. Neutral 40. The sum of the mole fractions of a mixture is: a. 100 b. 10 C. Exam continues on next pageExplanation / Answer
30) Standard reduction potential versus standard hydrogen potential implies a greater tendency of half reaction towards reduction in water. Since both indicate reduction potential of electrode in half reaction. So answer is A
31)False. Salt bridge provide anion to anode and cation to cathode in half cell reaction.
32)In voltaic cell oxidation occur at anode and reduction occur at cathode. So answer is B
33)1e1 is not an nuclear particle its a electron particle.
34)True - particle have high speed high energy emission.
35)Radioactive nuclus is unstable
36)True it has mass equal to electron with a charge of +1
37)Half life of radioactive nucleys obey 1st order kinetics
38) Fe(NO3)3 is slightly acidic in water
39)Fe(NO3)2 is neutral in water
40)sum of mole fraction is always 1
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