A certain metal M forms a soluble sulfate salt M2SO4. Suppose the left half cell of a galvanic cell apparatus is filled with a 200. mM solution of M₂SO4 and theright half cell with a 2.00 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 thepositive electrode.Be sure your answer has a unit symbol, if necessary, and round it to 2 significantdigits.○ left☐ x10O rightx

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Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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A 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 ?
A certain metal M forms a soluble sulfate salt M,SO4. Suppose the left half cell of a galvanic cell apparatus is filled with a 22.5 mM solution of M,SO, and the right half cell with a 4.50 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 25.0 °C. O left Which electrode will be positive? O right 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.
A 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 3.50 mM solution of M2(SO4)3 and the right half cell with a 3.50 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 35.0 °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. U ○ left x10 O right ⑤
A certain metal M2(SO4)3 forms a soluble sulfate salt . Suppose the left half cell of a galvanic cell apparatus is filled with a 1.00 M solution of M2(SO4)3 and the right half cell with a 1.00 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 35.0 C. What voltage will the voltmeter show?
A 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 3.00 M solution of M (NO3), and the right half cell with a 30.0 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 20.0 °C. Which electrode will be positive? O left O right 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
A 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 ?
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Gold is frequently purified by electroplating. Typically the gold is dissolved in a cyanide solution (which is fairly selective for gold) and then it is pulled out of solution by electroplating. If the electroplating apparatus used a current of 3.5 amperes, then how long will it take (h) to purify one ounce of gold from a gold(III) cyanide solution? ( You conduct an experiment where you use a single battery with a charge capacity of 900 mAh to precipitate an unknown metal from a salt solution that was leaking from an old battery. You use a vast excess of the salt, so the amount of metal condensed is limited by the battery. You obtain 3.368 g of the metal. You can assume that the metal was the only substance being reduced in the electrochemical cell and 100% of the listed battery charge is usable. If you were able to determine that the metal ion was a +2 ion, then which metal is it? This metal was used in batteries for a long time (even in “alkaline” batteries) due to its good…
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A certain metal M forms a soluble sulfate salt MSO4 . Suppose the left half cell of a galvanic cell apparatus is filled with a 20.0mM solution of MSO4 and the right half cell with a 4.00M 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 35.0°C. Which electrode will be positive? left or right 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.
A 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 1.50 M solution of M₂(SO4)3 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 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. left ☐ x10 O right Π

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