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vanadiumworksheet - NAME: C118: TWO OXIDATION STATES OF...

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1 C118: T WO O XIDATION S TATES OF V ANADIUM 25 POINTS N AME : L AB P ARTNER : Data: (4 pts. for thorough observations) Be sure to record your observations for each of the reactions that you have set up after three minutes. Indicate if a reaction has taken place. How will you know? Indicate if heat was required for the reaction to occur; record your observations for each solution before and after it was heated. Reduction of VO 2 + Reducing Agent Observations H 2 O Br - HNO 2 Fe 2+ H 2 SO 3 H 2 C 2 O 4
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2 Oxidation of VO 2+ Oxidizing Agent Observations SO 4 2- Fe 3+ NO 3 - Br 2 H 2 O 2
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3 1. (1 pt.) In this experiment you are using a series of reactions and observations to determine the cell potential for the following reaction. VO 2 + + 2 H + + e - VO 2+ + H 2 O E 0 = x Give the colors of VO 2 + and VO 2+ . 2. (6 pts.) a) Write the overall balanced redox reactions for VO 2 + with various reducing agents (H 2 O, Br - , HNO 2 , Fe 2+ , H 2 SO 3 , H 2 C 2 O 4 ). b)
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vanadiumworksheet - NAME: C118: TWO OXIDATION STATES OF...

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