Quiz on unit 9 must knows

#1 Which of the following terms matches the definition?

Ecell = E (cathode) - E (anode) IMPORTANT: if the reaction gets reversed (in order to balance, sometimes it will need to be reversed), the sign of the Ecell must switch, however if it gets multiplied (in order to balance) IT REMAINS THE SAME!!

how K and G relate to each other cell potential, Ecell, electromotive force (emf) is H < 0 and S > 0 Cell potential equation

#2 Which of the following terms matches the definition?

thermodynamically unfavorable

galvanic cell non-spontaneous is... if a reaction is thermodynamically favorable anode

#3 Which of the following terms matches the definition?

y + z --> Y+ + Z- (G<0)

overall cell reaction cathode oxidation half-reaction Cell potential equation

#4 Which of the following definitions matches the term?

cell potential, Ecell, electromotive force (emf)

V = IR voltage = current (amps) * resistance (ohms) it has k>1, relatively low activation energy 1 joule of work / coulomb of charge transferred J/C = units delta G and the energy of the product is lower than that of the reactants 1. G = negative = k>1; G = positive = k

#5 Which of the following terms matches the definition?

galvanic = anode is negative and cathode is positive electrolytic = anode is positive and cathode is negative

if a reaction is thermodynamically favorable galvanic cell vs electrolytic cell how K and G relate to each other cell potential, Ecell, electromotive force (emf)

#6 Determine if the following combination is true or false.

oxidation half-reaction

x --> X+ + e-

True

False

#7 Determine if the following combination is true or false.

anode

oxidation happens, losing electrons

True

False

#8 Determine if the following combination is true or false.

voltage equation

x --> X+ + e-

True

False

#9 Determine if the following combination is true or false.

cathode

reduction happens, gaining electrons

True

False

#10 Determine if the following combination is true or false.

galvanic cell

chemical energy is converted to electrical energy with spontaneous redox reaction Voltage consists of oxidizing agent in one compartment that pulls electrons through a wire from a reducing agent

True

False

Section 1: Multiple Choice questions

Ecell = E (cathode) - E (anode) IMPORTANT: if the reaction gets reversed (in order to balance, sometimes it will need to be reversed), the sign of the Ecell must switch, however if it gets multiplied (in order to balance) IT REMAINS THE SAME!!

thermodynamically unfavorable

y + z --> Y+ + Z- (G<0)

cell potential, Ecell, electromotive force (emf)

galvanic = anode is negative and cathode is positive electrolytic = anode is positive and cathode is negative

Section 2: True/false questions

oxidation half-reaction

x --> X+ + e-

anode

oxidation happens, losing electrons

voltage equation

x --> X+ + e-

cathode

reduction happens, gaining electrons

galvanic cell

chemical energy is converted to electrical energy with spontaneous redox reaction Voltage consists of oxidizing agent in one compartment that pulls electrons through a wire from a reducing agent

Triple-checked your answers?

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