# Which one of the following will increase the voltage of the cell Sn(s)+2Ag+(aq) →Sn2+(aq) +2Ag(s)

1.  Increase in size of the silver rod

2.  Increase in the concentration of Sn2+ ions

3.  Increase in the concentration of Ag+ ions

4.  None of the above

4
Correct Answer :

Increase in the concentration of Ag+ ions

Explanation :
No Explanation available for this question

# The total number of electrons involved in the reaction when one Faraday of electricity is passed through an electrolytic solution is

1.  96500

2.  6.02x1023

3.  22400

4.  1

4
Correct Answer :

6.02x1023

Explanation :
No Explanation available for this question

# The amount of electricity required to deposit 0.9g of aluminium when the electrode reaction is: Al3++3e-→Al(atomic mass of Al =27)

1.  9.65x103C

2.  1.93x104C

3.  9.65x104C

4.  4.34x105C

4
Correct Answer :

9.65x103C

Explanation :
No Explanation available for this question

# A galvanic cell is set up from a zinc bar weighing 100g and 1.0L of 1.0 M CuSO4 solution. How long would the cell run assuming it delivers a steady current of 1.0 amp

1.  24.6 hr

2.  26.8 hr

3.  53.6 hr

4.  16.8 hr

4
Correct Answer :

53.6 hr

Explanation :
No Explanation available for this question

# The coulombs of electricity required for reduction of 1 mol of MnO-4 to Mn2+ are

1.  96500 C

2.  1.93 x 105C

3.  4.83 x 105C

4.  9.65 x 105C

4
Correct Answer :

4.83 x 105C

Explanation :
No Explanation available for this question

# The standard e.m.f. of a cell involving one electron change is found to be 0.591Vat 250C. The equilibrium constant of the reaction is (F=96500Cmol-1;R=8.314JK-1mol-1)

1.  x 1010

2.  x 105

3.  x 101

4.  x 1030

4
Correct Answer :

x 1010

Explanation :
No Explanation available for this question

# How is cell potential (E0 Cell) related to equilibrium constant (Kc) for a cell reaction

1.  E0Cell=(2.303RT/nF) (log1/Kc)

2.  E0Cell=nRTlogKc

3.  E0Cell=- log1/Kc=(2.303RT/nF)

4.  d.E0Cell= (2.303RT/nF) logKc

4
Correct Answer :

d.E0Cell= (2.303RT/nF) logKc

Explanation :
No Explanation available for this question

# In H2-O2 fuel cell, the reaction occurring at cathode is

1.

2.  H++e-→1/2H2

3.  O2+2H2O+4e-→4OH-

4.

4
Correct Answer :

Explanation :
No Explanation available for this question

# Which of the following shows the correct variation of ∧m vs √C for acetic acid

1.

2.

3.

4.

4
Correct Answer :

Explanation :
No Explanation available for this question

# Four alkali metals A, B, C and D are having respectively standard reduction potential as -3.05, -1.66, -0.40 and 0.08 V. Which one will be the most reducing

1.  A

2.  B

3.  C

4.  D

4
Correct Answer :

A

Explanation :
No Explanation available for this question

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