Tutorial 8 Questions

Tutorial 8 Questions - CHEMISTRY 1AO3 TUTORIAL #8 November...

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CHEMISTRY 1AO3 TUTORIAL #8 November 2-6, 2009 Redox Reactions – Ch 5 / Acid-Base Chemistry – Chapter 16 ______________________________________________________________________________ Page 1 of 2 The following problems (1-13) are based on material from Chapters 5, 16 and class notes. 1. Complete and balance the following reaction in basic solution: MnO 2 (s) + ClO 3 - (aq) MnO 4 - (aq) + Cl - (aq) 2. Complete and balance the following reaction in acidic solution: CH 3 CH 2 OH(l) + Cr 2 O 7 2 (aq) CH 3 COOH(aq) + Cr 3+ (aq) Hint: In order to determine the oxidation number of alcohol and carboxylic acid, consider the carbon species -CH 2 OH and -COOH, respectively, since the CH 3 end group does not change. 3. The following redox reaction is an important one used in mining and metallurgy applications for the transformation/detoxification of toxic cyanide ion into innocuous nitrogen gas and carbonate ion. Complete and balance the following reaction in basic solution: CN - (aq) + ClO - (aq) N 2 (g) + CO 3 2- (aq) + Cl - (aq) 4. Complete and balance the following disproportionation reaction in basic solution:
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Tutorial 8 Questions - CHEMISTRY 1AO3 TUTORIAL #8 November...

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