Quiz on unit 9 must knows

#1 Which of the following definitions matches the term?

Cell potential equation

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!! y + z --> Y+ + Z- (G<0) galvanic = anode is negative and cathode is positive electrolytic = anode is positive and cathode is negative oxidation happens, losing electrons

#2 Which of the following definitions matches the term?

non-spontaneous is...

thermodynamically unfavorable as V goes up, so does S as the more temperature, the more energy, the mor entropy T = 500k spontaneous, high temperature, T delta S is large reduction happens, gaining electrons

#3 Which of the following terms matches the definition?

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

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

#4 Which of the following terms matches the definition?

1 joule of work / coulomb of charge transferred J/C = units

1st law of thermodynamics non-spontaneous is... how a reaction that is thermodynamically unfavorable occur cell potential, Ecell, electromotive force (emf)

#5 Which of the following terms matches the definition?

True

False

Section 1: Multiple Choice questions

Cell potential equation

non-spontaneous is...

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

1 joule of work / coulomb of charge transferred J/C = units

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

Section 2: True/false questions

oxidation half-reaction

oxidation happens, losing electrons

anode

degrees of freedom of a molecule

voltage equation

oxidation happens, losing electrons

cathode

as V goes up, so does S as the more temperature, the more energy, the mor entropy

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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