Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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- An galvanic cell is constructed based on the following unbalanced net ionic equation.A2+(aq) + X(s) → A(s) + X3+(aq)The standard reduction potentials are as follows: A2+ + 2e− → A 1.52 V X3+ + 3e− → X -2.31 V Use this information to answer the following questions.How many electrons are being transferred in this reaction? 2 1 3 5 8 12 6 What substance is being oxidized in this reaction? X X3+ A2+ A What substance is being reduced in this reaction? A A2+ X3+ X Which of these best describes the flow of electrons in the cell's external circuit? electrons flow towards A and away from X electrons flow away from both A and X electrons flow towards both A and X electrons flow towards X and away from Aarrow_forwardA galvanic cell has the overall reaction: 2Cu+(aq) + Pb(s) → 2Cu(s) + Pb2+(aq) Which is the half reaction occurring at the cathode? Select one: Cu(s) → Cu+(aq) + e− Pb2+(aq) + e− → Pb+(aq) Pb(s) → Pb2+(aq) + 2e− Pb2+(aq) + 2e− → Pb(s) Pb(s) + 2e− → Pb2+(aq) Cu(s) + e− → Cu+(aq) Cu+(aq) + e− → Cu(s)arrow_forwardA certain metal M forms a soluble sulfate salt M₂(SO4)3. Suppose the left half cell of a galvanic cell apparatus is filled with a 4.50 M solution of M₁₂(SO4), and the right half cell with a 450. mM solution of the same substance. Electrodes made of M are dipped into both 3 solutions and a voltmeter is connected between them. The temperature of the apparatus is held constant at 40.0 °C. Which electrode will be positive? What voltage will the voltmeter show? Assume its positive lead is connected to the positive electrode. Be sure your answer has a unit symbol, if necessary, and round it to 2 significant digits. П left right ☐ x10 Xarrow_forward
- 4. Consider a galvanic cell consisting of 2Crs) + 3Cuaq) → 2Cra + 3Cu6) Write the oxidation and reduction half-reactions and write the reaction using cell notation. Which reaction occurs at the anode? The cathode? Oxidation occurs at the anode and reduction at the cathode.arrow_forwardThe voltaic cell shown above has two identical zinc electrodes : The solution in half-cell A contains a 4.2 mol/L ZnSO4 solution. Half-cell B solution contains a 0.043 mol/L ZnSO4 solution. Calculate the emf (electromotive force) of this cell at non-standard conditions in volts (V).arrow_forwardA certain metal M forms a soluble sulfate salt M₂SO4. Suppose the left half cell of a galvanic cell apparatus is filled with a 3.50 M solution of M₂SO4 and the right half cell with a 35.0 mM solution of the same substance. Electrodes made of M are dipped into both solutions and a voltmeter is connected between them. The temperature of the apparatus is held constant at 40.0 °C. Which electrode will be positive? What voltage will the voltmeter show? Assume its positive lead is connected to the positive electrode. Be sure your answer has a unit symbol, if necessary, and round it to 2 significant digits. 0 left rightarrow_forward
- A voltaic electrochemical cell is constructed in which the following cell reaction occurs. The half-cell compartments are connected by a salt bridge. → Sn²*(aq) + Hg(1) 2+, Sn(s) + Hg²*(aq) · What is the reaction that takes place in the anode compartment? + + What is the reaction that takes place in the cathode compartment? + + In the external circuit, electrons migrate v the Hg²* electrode v the Sn electrode. In the salt bridge, anions migrate the Hg** compartment| v the Sn compartment.arrow_forwardA certain metal M forms a soluble sulfate salt M₂SO4. Suppose the left half cell of a galvanic cell apparatus is filled with a 2.50 M solution of M₂SO4 and the right half cell with a 1.25 mM solution of the same substance. Electrodes made of M are dipped into both solutions and a voltmeter is connected between them. The temperature of the apparatus is held constant at 40.0 °C. Which electrode will be positive? What voltage will the voltmeter show? Assume its positive lead is connected to the positive electrode. 0 Be sure your answer has a unit symbol, if necessary, and round it to 2 significant digits. left right ☐ x10 X Śarrow_forwardPlease Help me answer this, thank u rarrow_forward
- A certain metal M forms a soluble sulfate salt MSO4. Suppose the left half cell of a galvanic cell apparatus is filled with a 200. mM solution of MSO4 and the right half cell with a 4.00 M solution of the same substance. Electrodes made of M are dipped into both solutions and a voltmeter is connected between them. The temperature of the apparatus is held constant at 20.0 °C. Which electrode will be positive? What voltage will the voltmeter show? Assume its positive lead is connected to the positive electrode. Be sure your answer has a unit symbol, if necessary, and round it to 2 significant digits. 0 left right x10 X Sarrow_forwardA voltaic cell consists of two half-cells. One of the half-cells contains a platinum electrode surrounded by chromium (III) and dichromate ions. The other half-cell contains a platinum electrode surrounded by bromate ions and liquid bromine. Assume that the cell reaction, which produces a positive voltage, involves both chromium (III) and bromate ions. The cell is at 25 degree celsius. What is the cell diagram notation?arrow_forwardA certain metal M forms a soluble nitrate salt M(NO3)2. Suppose the left half cell of a galvanic cell apparatus is filled with a 1.50 M solution of M(NO3)₂ and the right half cell with a 15.0 mM solution of the same substance. Electrodes made of M are dipped into both solutions and a voltmeter is connected between them. The temperature of the apparatus is held constant at 30.0 °C. Which electrode will be positive? What voltage will the voltmeter show? Assume its positive lead is connected to the positive electrode. 0 Be sure your answer has a unit symbol, if necessary, and round it to 2 significant digits. left right X Ś ?arrow_forward
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