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4. Here you titrate 100 mL of carbonic acid (H;CO) of unknown concentration with 0.01 M of potassium hydroxide (KOH) solution. When you added 75 mL of KOH, reaction was completed and carbonic acid wa completely neutralized. (Hint: Carbonic acid is diprotic acid and cach carbonic acid molecule releases 2 H* in solution.) a) Write the balanced equation. b) Calculate the concentration of carbonic acid. 5. The following reaction is oxidation-reduction reaction. Overall reaction K2Cr.O:(aq) + 6KI(aq) + 14HCI(aq) → 2CrCls(aq) + 31(s) + 7H20(1) + 8KCI(aq) Net ionic equation CrO (aq) + 61' (aq) + 14H (aq) → 2Cr* (aq) + 312(s) + 7H20(1) a) Find out which is oxidized and which is reduced using oxidation numbers. b) Which is oxidizing agent? Which is reducing agent? c) Which species are spectator ions in this reaction?

4. Here you titrate 100 mL of carbonic acid (H;CO) of unknown concentration with 0.01 M of potassium hydroxide (KOH) solution. When you added 75 mL of KOH, reaction was completed and carbonic acid wa completely neutralized. (Hint: Carbonic acid is diprotic acid and cach carbonic acid molecule releases 2 H* in solution.) a) Write the balanced equation. b) Calculate the concentration of carbonic acid. 5. The following reaction is oxidation-reduction reaction. Overall reaction K2Cr.O:(aq) + 6KI(aq) + 14HCI(aq) → 2CrCls(aq) + 31(s) + 7H20(1) + 8KCI(aq) Net ionic equation CrO (aq) + 61' (aq) + 14H (aq) → 2Cr* (aq) + 312(s) + 7H20(1) a) Find out which is oxidized and which is reduced using oxidation numbers. b) Which is oxidizing agent? Which is reducing agent? c) Which species are spectator ions in this reaction?

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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4. Here you titrate 100 mL of carbonic acid (H;CO,) of unknown concentration with 0.01 M of potassium hydroxide (KOH) solution. When you added 75 mL of KOH, reaction was completed and carbonic acid wa completely neutralized. (Hint: Carbonic acid is diprotic acid and cach carbonic acid molecule releases 2 H in solution.) a) Write the balanced equation. b) Calculate the concentration of carbonic acid. 5. The following reaction is oxidation-reduction reaction. Overall reaction K2Cr.O:(aq) + 6KI(aq) + 14HCI(aq) → 2CrCls(aq) + 3I(s) + 7H2O(1) + 8KCI(aq) Net ionic equation CrO (aq) + 61' (aq) + 14H (aq) → 2Cr" (aq) + 312(s) + 7H20() a) Find out which is oxidized and which is reduced using oxidation numbers. b) Which is oxidizing agent? Which is reducing agent? c) Which species are spectator ions in this reaction?
Transcribed Image Text:4. Here you titrate 100 mL of carbonic acid (H;CO,) of unknown concentration with 0.01 M of potassium hydroxide (KOH) solution. When you added 75 mL of KOH, reaction was completed and carbonic acid wa completely neutralized. (Hint: Carbonic acid is diprotic acid and cach carbonic acid molecule releases 2 H in solution.) a) Write the balanced equation. b) Calculate the concentration of carbonic acid. 5. The following reaction is oxidation-reduction reaction. Overall reaction K2Cr.O:(aq) + 6KI(aq) + 14HCI(aq) → 2CrCls(aq) + 3I(s) + 7H2O(1) + 8KCI(aq) Net ionic equation CrO (aq) + 61' (aq) + 14H (aq) → 2Cr" (aq) + 312(s) + 7H20() a) Find out which is oxidized and which is reduced using oxidation numbers. b) Which is oxidizing agent? Which is reducing agent? c) Which species are spectator ions in this reaction?
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