S2011Quiz2FORMBwith solutions marked

S2011Quiz2FORMBwith solutions marked - 1 CHEM 1B Quiz 2...

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1 CHEM 1B Quiz 2 Test Form B May 6, 2011 INSTRUCTIONS: Bubble in Form B on your Scantron Form Write your perm number and bubble in your perm number (7 digits only, no extra numbers). Write your name on the scantron card. Completely fill bubbles / answers There are six questions of equal value . You may work out the problems and write your answers on this quiz. Turn in the Scantron form only . Keep the quiz so you can check your work and your answers later. The answers to the quiz will be posted on our course web page, and quiz scores will be posted on Online Grades. (1) Use the standard reaction potentials to determine the standard free energy of formation ∆° ± ² of hydrogen peroxide (H 2 O 2 ). What is the standard free energy of formation of hydrogen peroxide at 25 o C? (A) -286 kJ mol -1 (B) 212 kJ mol -1 (C) 150 kJ mol -1 (D) -176 kJ mol -1 (E) -131 kJ mol -1 (2) What mass of iron (Fe) will be plated out of an aqueous solution of Fe 3+ ions, in 1.0 hr using a current of 15.0 A? (The molar mass of Fe is 55.85 g/mol.)
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S2011Quiz2FORMBwith solutions marked - 1 CHEM 1B Quiz 2...

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