Unit 4 - Practice Quiz

1 Which of the following expressions correctly represents the specific conductance ()?

2 What is the SI unit of molar conductivity ()?

3 Upon dilution, the specific conductance () of an electrolyte solution:

4 The quantity in conductivity measurements is known as:

5 If the resistance of a 0.1 M KCl solution in a cell is and the cell constant is , what is the specific conductance?

6 In a Galvanic cell, the anode is the electrode where:

7 Which of the following statements about the Salt Bridge is incorrect?

8 The relationship between molar conductance () and specific conductance () when concentration is in and is in is:

9 A cell in which electrical energy is converted into chemical energy is called a(n):

10 According to the Nernst solution pressure theory, the tendency of a metal to pass into solution as ions is opposed by:

11 The Electrical Double Layer (Helmholtz Double Layer) is formed at:

12 For the reaction , the Nernst equation for cell EMF at 298 K is:

13 Which of the following conditions represents a Reversible Cell?

14 The standard electrode potential of the Standard Hydrogen Electrode (SHE) is arbitrarily taken as:

15 In the electrochemical series, elements are arranged in increasing order of their:

16 If is positive, the cell reaction is:

17 Calculate the cell EMF for given .

18 The relationship between Standard Gibbs Free Energy change and Standard EMF is:

19 Which metal will displace Hydrogen from dilute acids?

20 The specific conductance of a 0.01 M solution is . Calculate its molar conductance.

21 Which equation represents the temperature coefficient of the EMF?

22 The entropy change of a cell reaction is given by:

23 The cell constant is usually determined by measuring the resistance of a standard solution of:

24 For a concentration cell (e.g., ), the standard EMF () is:

25 In the Nernst equation, the value of the factor at (298 K) is approximately:

26 If the specific conductance of a solution is and the volume containing 1 gram equivalent of the electrolyte is , then the equivalent conductance is:

27 Which of the following represents the correct IUPAC cell representation for the Daniel Cell?

28 In an electrochemical cell, electrons flow in the external circuit from:

29 The enthalpy change () of a cell reaction can be calculated using:

30 Measurement of Cell EMF is accurately done using:

31 The unit of Specific Resistance (Resistivity, ) is:

32 Strong electrolytes differ from weak electrolytes because strong electrolytes:

33 For the electrode reaction , the Nernst equation for the electrode potential () is:

34 Which of the following is an example of an Irreversible Cell?

35 Calculate the equilibrium constant for a reaction at 298 K if and .

36 The limiting molar conductivity is defined as:

37 Which ion has the highest mobility in aqueous solution?

38 In a Nernst equation calculation, if the concentration of the product ions increases, the EMF of the cell:

39 Which of the following does NOT affect the value of the single electrode potential?

40 A cell has . The distance between plates is 2 cm and area is 4 cm. Calculate .

41 The variation of molar conductance with concentration for strong electrolytes is given by:

42 Calculate for a reaction where and . ()

43 In the Standard Hydrogen Electrode (SHE), hydrogen gas is bubbled at a pressure of:

44 Which thermodynamic parameter determines the maximum electrical work a cell can perform?

45 The electrolyte used in a salt bridge is usually:

46 If the temperature coefficient is zero, then:

47 Which is the strongest oxidizing agent among the following?

48 The conductivity of a solution depends on:

49 In a concentration cell represented by , the cell reaction is spontaneous if:

50 What is the cell EMF for a reaction in equilibrium?