Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Transcribed Image Text:How many minutes does 8.208 A of current need to be applied to plate 1.402 g of
aluminum onto a substance according to the following half reaction?
AI3+ (аg) + 3 е >
Al(s)
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- How many grams of silver can be plated onto an object in 7.46 minutes at 3.07 A of current? Ag+ (aq) +e → ► Ag(s) Your Answer: Answer unitsarrow_forwardA chemist designs a galvanic cell that uses these two half-reactions: MnO4(aq)+8H(aq) +5e Cl₂(g) +2e Write a balanced equation for the half-reaction that happens at the cathode. Write a balanced equation for the half-reaction that happens at the anode. Answer the following questions about this cell. Write a balanced equation for the overall reaction that powers the cell. Be sure the reaction is spontaneous as written. + Do you have enough information to calculate the cell voltage under standard conditions? half-reaction 0 0 Yes Mn²+ (aq) + 4H₂O(1) →Mn²+, 2 C1 (aq) No standard reduction potential Eº 'red = +1.51 V E=+1.359 V red ロ→ロ X 0x19 Sarrow_forwardThe standard EMF for the cell using the overall cell reaction below is +0.65 V: 2AI (s) + 312 (s) What is AGO for the cell reaction in kJ? Express your answer in decimal notation to one decimal place, without units. 2A1³+ (aq) + 61¯ (aq) →>>arrow_forward
- Balance the following half-reactions by adding the appropriate number of electrons (e-). Then, classify each reaction as an oxidation or reduction half-reaction. Note that for each of the four reactions, one of the gray boxes will be left blank and the other will be filled with electron(s). Use the symbol e- to represent an electron. Part 4 + 12(s) + 6H2O(1) > 2I0-3 + 12H+(aq) + --arrow_forwardUsing standard reduction potentials from the ALEKS Deta tab, calculate the standard reaction free energy AG for the following redox reaction. Round your answer to 3 significant digits. Cu (aq) + HNO₂ (aq) + H* (aq) → Cu² (aq) + NO(g) + H₂O (1) Xarrow_forwardHow many grams of silver can be plated onto an object in 16.28 minutes at 7.54 A of current? Ag+ (aq) +e → ► Ag(s) Your Answer: Answer unitsarrow_forward
- The amount of lactic acid, HCa Hg O3, produced in a sample of muscle tissue was analyzed by its reaction with a hydroxide ion. A hydroxide ion was produced in the sample mixture by electrolysis. The cathode reaction was 2H2O(1) + 2e → H2 (9) + 20H (ag) A hydroxide ion reacts with lactic acid as soon as it is produced. The endpoint of the reaction is detected with an acid-base indicator. It required 107 s for a current of 15.6 mA to reach the endpoint. How many grams of lactic acid (a monoprotic acid) were present in the sample?arrow_forwardYou are a bioengineer designing a new type of pacemaker. Which type of Galvanic cell would be best for you to use in this new device?arrow_forwardHandwriting not allow pleasearrow_forward
- Balance the redox reaction in acidic solution:Cu(s)+NO−3(aq)→Cu2+(aq)+NO2(g) Express your answer as a chemical equation including phases.arrow_forwardB) Balance the following redox reaction in acidic solution: I03 - (aq) + NO2(g) → NO3 (aq) + I»(s)arrow_forwardHow many minutes does it take to plate 222.3 g of chromium onto a car part using 14.27 A of current? Cr+ (aq) + 2 e¯ → Cr(s) Your Answer: Answer unitsarrow_forward
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