A disproportionation reaction involves a substance that acts as both an oxidizing and reducing agent, producing higher and lower oxidation states of the same element in the products. Which of the following disproportionation reactions are spontaneous under standard conditions? Calculate ΔG° and K at 25°C for those reactions that are spontaneous under standard conditions. Use the following half-reactions. (Enter ΔG° = 0 and K= 0 for reactions that are not spontaneous.) ClO3- + 3 H+ + 2e- → HClO2 + H2O      ℰ° = 1.21 VHClO2 + 2 H+ + 2e- → HClO + H2O      ℰ° = 1.65 V   (a) 2 Cu+(aq) → Cu2+(aq) + Cu(s)   spontaneous or not spontaneous ?   ΔG°   -34.7 kJ K ? I found that G is correct and because it is negative it is spontaneous. Could you please help me figure out K?

A certain metal M forms a soluble sulfate salt M₂SO4. Suppose the left half cell of a galvanic cell apparatus is filled with a 2.00 M solution of M₂ SO4 and the right half cell with a 10.0 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 25.0 °C. left Which electrode will be positive? x10 right X Ś ? 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.

The chemical reaction that causes iron to corrode in air is given by: 4Fe+3O2→2Fe2O3 in which at 298 K, ΔHorxn = −1684 kJ and ΔSorxn = −543.7 J/K At what temperature Teq do the forward and reverse corrosion reactions occur in equilibrium?

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