Thank you 1. Balance the redox reaction and choose the correct coefficients for

Question

Thank you 1. Balance the redox reaction and choose the correct coefficients for each reactant and product a. 2,1,42,1,2 c. 2,1,22,1,1 d. 2,1,22,1,2 2. Which statement is correct of voltaic cells? a. electrons flow from the anode to the cathode b. electrons flow from the more negatively charged electrode to the more positive charged electrode c. electrons flow from higher potential energy to lower potential energy d. all of the above are true 3. The standard reduction potential for Zn2/Zn -0.76 V. How does the potential energy of an electron from the electrode that uses the Zn/2n compare to the relative potential energy of an electron from the standard hydrogen electrode? a. an electron at the Zn/Zn electrode has a higher potential energy than an electron at the standard hydrogen electrode b. an electron at the Zn/Zn2 electrode has a lower potential energy than an electron at the standard hydrogen electrode c. an electron at the Zn/Zn2 has the same potential energy as an electron at the standard hydrogen electrode d. nothing can be concluded about the relative potential energy of an electron at the standard hydrogen electrode 4. a redox reaction has an E-0.56 V. What can you conclude about the equilibrium constant, K, for the reaction? a. K

Explanation / Answer

Ans 1 :a) 2,1,4 -> 2,1,2

To balance the redox reaction , carefully note down the species on each side of the reaction. Now equate the atoms on the left to the ones on the right. Balance and check.

So the correct stoichiometric coefficients on left will be 2 ,1 , 4 and that on right will be 2 ,1 ,2

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