Quiz 2 2-17-06

Quiz 2 2-17-06 - a) Very large b) Very small c) 0 d) 1 e)...

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Quiz 2 Formulas G = H - T S S = q rev /T G = G o + RT lnQ G o = -RT lnK eq E = E o –RT/nF lnQ E = E o – 0.059/n logQ E o = 0.059/n log K eq
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The balanced reaction for combination of hydrogen with oxygen for form water is 2 H 2 (g) + O 2 (g) 2 H 2 O (g) 1. The standard entropy change, S o for the reaction is 2. The standard enthalpy change, H o , for the reaction is Options for answers to 1 and 2 a) Positive b) Negative c) Zero d) Depends on temperature
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2 H 2 (g) + O 2 (g) 2 H 2 O (g) 3. Under standard conditions the value of the reaction quotient, Q, for this reaction is
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Unformatted text preview: a) Very large b) Very small c) 0 d) 1 e) 0.1 A galvanic cell is described as Pt|H 2 ( g ,0.1 atm )|1M OH-(aq) ║ 1MOH-( aq )|O 2 ( g,10atm)| Pt 4. The half reaction that occurs at the anode is a) H 2 (g) → 2 H + ( aq ) + 2 e-b) O 2 (g) + 4 H + ( aq ) + 4e-→ 4 H 2 O ( l ) c) 4 OH-→ O 2 (g) + 2 H 2 O ( l ) + 4e-d) 2 H 2 O( l ) + 2e-→ H 2 ( g ) + 2 OH-( aq ) e) None of the above Pt|H 2 ( g ,0.1 atm )|1M OH-(aq) ║ 1M OH-( aq )|O 2 ( g,10atm)| Pt 5. The potential of this cell is a) E = 1.23V b) Greater than 1.23 V c) Less than 1.23 V d) 0 e) None of the above...
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This note was uploaded on 08/06/2008 for the course CHEM 1B taught by Professor Watts during the Winter '08 term at UCSB.

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Quiz 2 2-17-06 - a) Very large b) Very small c) 0 d) 1 e)...

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