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Redox Reaction Lab Report

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Redox Reaction Lab Report
98.) Consider the unbalanced redox reaction:
Cr2O72- (aq ) + Cu(s ) → Cr3+ (aq ) + Cu2+
Balance the equation in acidic solution and determine how much of a 0.850 M K2Cr2O7 solution is required to completely dissolve 5.25 g of Cu.
Nitric acid is usually purchased in concentrated form with a 70.3% HNO3 concentration by mass and a density of 1.41 g/mL. How much of the concentrated stock solution in milliliters should you use to make 2.5 L of 0.500 M HNO3?
Mass %= Mass Solute/ Mass Solvent + Mass Solvent x 100
Determine whether or not each reaction is a redox reaction. For those reactions that are redox reactions, identify the substance being oxidized and the substance being reduced.
(a) Zn(s) + CoCl2 (aq) → ZnCl2 (aq) + Co(s)
Oxidation number is Zinc when it is in its solid form of Zn(s) is 0. (Number of Zinc in
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