pls help asap 1. By definition, an electrolyte isa.a substance that participates in a redox reaction as an ion.b. a spectator ion.C.a reducing agentd. a substance that conducts electricity when dissolve in water.2. Which of the following metals is most easily oxidized?a. Calciumb. Ironc. Chromiumd. Silver

1.Electrolytes are substances that conduct electricity by the movement of ions instead of electrons.…

Answered: 1. By definition, an electrolyte is a.…

Introductory Chemistry: A Foundation

9th Edition

ISBN:9781337399425

Author:Steven S. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Donald J. DeCoste

Chapter18: Oxidation–reduction Reactions And Electrochemistry

Section: Chapter Questions

Problem 33QAP

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Similar questions

. For each of the following unbalanced oxidation-reduction chemical equations, balance the equation by inspection, and identify which species is the reducing agent. a.Fe(s)+O2(g)Fe2O3(s)b.Al(s)+Cl2(g)AlCl3(s)c.Mg(s)+P4(s)Mg3P2(s)
Complete and balance the following oxidation-reduction reactions, which give the highest possible oxidation state for the oxidized atoms. (a) Al(s)+F2(g) (b) Al(s)+CuBr2(aq) (single displacement) (c) P4(s)+O2(g) (d) Ca(s)+H2O(l) (products are a strong base and a diatomic gas)
Why is it that when something gains electrons, it is said to be reduced? What is being reduced?
Predict the chemical reactions that will occur at the two electrodes in the electrolysis of an aqueous sodium hydroxide solution.
Substances A2, B2, and C2 can all act as oxidizing agents. In solution, A2 is green, B2 is yellow, and C2 is red. In the reactions in which they participate, they are reduced to A, B, and C ions, all of which are colorless. When a solution of C2 is mixed with one containing B ions, the color changes from red to yellow. Which species is oxidized? __________ Which is reduced? __________ When a solution of C2 is mixed with one containing A ions, the color remains red. Is C2 a better oxidizing agent than A2? __________ Is C2 a better oxidizing agent than B2? __________ Arrange A2, B2, and C2 in order of increasing strength as an oxidizing agent. ___________________ _______________ ______________ weakest oxidizing agentstrongest oxidizing agent
The ampere unit is used to describe the flow of electricity in an electrical circuit. One ampere is an amount of electricity corresponding to the flow of 6.21018 electrons past a point in a circuit in 1 second. In a hydrogen fuel cell, hydrogen atoms are dissociated into H+ ions and electrons (HH++1e). How many grams of hydrogen must be dissociated each second in a fuel cell to produce 1.0 ampere of electricity?
What does it mean for a substance to be oxidized? The term “oxidation” originally came from substances reacting with oxygen gas. Explain why a substance that reacts with oxygen gas will always be oxidized.
Chromium has been investigated as a coating for steel cans. The thickness of the chromium film is determined by dissolving a sample of a can in acid and oxidizing the resulting Cr3+ to Cr2O72 with the peroxydisulfate ion: S2O82(aq) + Cr3+(aq) + H2O(l) Cr2O72(aq) + SO42(aq) + H+(aq) (Unbalanced) After removal of unreacted S2O82 an excess of ferrous ammonium sulfate [Fe(NH4)2(SO4)26H2O] is added, reacting with Cr2O72 produced from the first reaction. The unreacted Fe2+ from the excess ferrous ammonium sulfate is titrated with a separate K2Cr2O7 solution. The reaction is: H+(aq) + Fe2+(aq) + Cr2O72(aq) Fe3+(aq) + Cr3+(aq) + H2O(l) (Unbalanced) a. Write balanced chemical equations for the two reactions. b. In one analysis, a 40.0-cm2 sample of a chromium-plated can was treated according to this procedure. After dissolution and removal of excess S2O82, 3.000 g of Fe(NH4)2(SO4)26H2O was added. It took 8.58 mL of 0.0520 M K2Cr2O7 solution to completely react with the excess Fe2+. Calculate the thickness of the chromium film on the can. (The density of chromium is 7.19 g/cm3)
Complete and balance the following oxidation-reduction reactions, which give the highest possible oxidation state for the oxidized atoms. (a) K(s)+H2O(l) (b) Ba(s)+HBr(aq) (c) Sn(s)+I2(s)

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