Balancing Redox Reactions in Acidic or Basic Aqueous Solution Read: Section 4.11, Zumdahl, "Chemical Principles" 8th ed. Compare A worked example using the oxidation number method. Compose the balanced reaction equation for the following reaction occuring in acidic aqueous medium. Reduce all coefficients to the lowest possible integers. Bra(aq) +S₂O(aq) Br(aq) + S042-(aq) Select the coefficients below, (appropriately including or excluding H2O(l) and H+(aq)). (Note that all choices must be made to receive a grade, even coefficients of 1 or 0.) Br₂(aq) + S₂032(aq) + 1pts Submit Answer Tries 0/5 H+(aq) + H2O(l) → Br (aq) + SO42-(aq) + H+(aq) + ⚫ H₂O(1) Now for something perhaps more difficult. Compose the balanced reaction equation for the following reaction occuring in basic aqueous medium. Reduce all coefficients to the lowest possible integers. CrI3(s) + Cl2(g) → CrO4²¯(aq) + 104¯(aq) + Cl¯¯(aq) Select the coefficients below, (appropriately including or excluding H2O(I) and OH(aq)). (Note that all choices must be made to receive a grade, even coefficients of 1 or 0.) → CrI3(s) + • Cl2(g) + 1pts Submit Answer Tries 0/5 OH(aq) + ← (1)0²H CrO42-(aq) + 104 (aq) + • Cl(aq) + OH(aq) + ⚫ H₂O(1)

(CH3)2CHCH,CHO 1. NH3 2. NaCN, HCI 3. HCI, H₂O, heat

Endothermic has a -AH True False

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பட G H | J K L Σ N P Q R 139 140 141 138 15. A Consider two zero coupon bonds, S & L that represent a short-term and long-term maturity bond respectively. The two bonds have the following features: Bond S: Maturity = 3 years YTM = 6.73% YTM = 6.73% Bond L: Maturity = 15 years Par = Par = $1,000 $1,000 Price = Price = $822.51 $376.45 Which bond, the short-term bond S or the long-term bond L, exhibits a greater price change when both yields increase to 7.73%? 142 143 Price of Bond S when YTM = 7.73%: ? 144 Price of Bond L when YTM = 7.73%: ? Price change of S = Price change of L = ? ? Answer: 145 146 147 148 A B C D E 136 137 ? S T U V 150 151 152 149 16. A Consider two coupon bonds, HC and LC, with the same maturity but the different coupon rate. HC/LC represent a High/Low Coupon, respectively. Assume m = 1. The two bonds have the following features: Bond HC: Maturity = 10 years $40 Par = $1,000 $20 Bond LC: Maturity=10 years PMT = PMT = Par = $1,000 YTM = 7.00% YTM = 4.00% Price =…