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Question

Amazon.com-Online Sh.. Office 365 Outlook -Exchange ered by Office 3es nload ne Find (D Give Feedback to Micros Print Help b. Ca+ d. Cl2 9. What volume of 00100 MKMnO, solution is required to oxidize 42.5 ml of 0.0190 MFesO, in sulfuric acid solution? Mino,-+ H' + Fe* Mn2+ + Fe+ + H2O (unbalanced) a. 16.2 mL b. 8.5 mL c. 80.0 mL d. 31.9 mL e 21.3 mL 10. Balance the following redox equation in basic solution. What is the coefficient of the aluminum? NO2Taq) + Al(s) NH3(g) + AIO2Taq) d. 2 - 11. At standard conditions, which one of the following will oxidize Za to Zni- but will not osidize Cu to Cu? a. Cd

Explanation / Answer

Balanced equation is,

2 MnO4- + 16 H+ + 10 Fe2+ ------> 2 Mn2+ + 10 Fe3+ + 8 H2O

Therefore useful formula,

M1V1/n1 = M2V2/ n2

0.0100 * V1 / 2 = 0.0190 * 42.5 / 10

V1 = 16.15 mL

So, ( a ) 16.2 mL of permanganate solution is required.

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