Under standard conditions, the number of moles of M* oxidized when one mole of X is converted to Y is [F = 96500 C mol-11 [JEE (Adv)-2015 (Paper-1)] 19. The molar conductivity of a solution of a weak acid HX (0.01 M) is 10 times smaller than the molar conductivity of a solution of a weak acid HY (0.10 M). If 2 =1 the difference in their pK, values, pK,(HX)- pK,(HY), is (consider degree of ionization of both acids to be <<1) [JEE (Adv)-2015 (Paper-2)] 20. The conductance of a 0.0015 M aqueous solution of a weak monobasic acid was determined by using a conductivity cell consisting of platinized Pt electrodes. The distance between the electrodes is 120 cm with an area of cross section of 1 cm2. The conductance of this solution was found to be 5 x 10-7S. The pH of the solution is 4. The value of limiting molar conductivity (A) of this weak monobasic acid in aqueous solution is Z x 102 S cm-1 mol-1. The value of Z is [JEE (Adv)-2017 (Paper-1)] 21. For the electrochemical cell, Mg(s) | Mg2+ (aq, 1 M) || Cu2+ (aq, 1 M)| Cu(s) the standard emf of the cell is 2.70 V at 300 K. When the concentration of Mg2+ is changed to x M, the cell potential changes to 2.67 V at 300 K. The value of x is (given, ==11500 KV, where F is the Faraday constant and R is the gas constant, In(10) = 2.30) R [JEE (Adv)-2018 (Paper-1)] 22. Consider an electrochemical cell: A(s) | An+ (aq, 2 M) || B2n+ (aq, 1 M) | B(s). The value of AH for the cell reaction is twice that of AG° at 300 K. If the emf of the cell is zero, the AS° (in J K-1 mol-1) of the cell reaction per mole of B formed at 300 K is (Given: In(2) = 0.7, R (universal gas constant) = 8.3 J K-1 mol-. H, S and G are enthalpy, entropy and Gibbs [JEE (Adv)-2018 (Paper-2)] 23. Consider a 70% efficient hydrogen-oxygen fuel cell working under standard conditions at 1 bar and 298 K. Its cell reaction is energy, respectively.)
Under standard conditions, the number of moles of M* oxidized when one mole of X is converted to Y is [F = 96500 C mol-11 [JEE (Adv)-2015 (Paper-1)] 19. The molar conductivity of a solution of a weak acid HX (0.01 M) is 10 times smaller than the molar conductivity of a solution of a weak acid HY (0.10 M). If 2 =1 the difference in their pK, values, pK,(HX)- pK,(HY), is (consider degree of ionization of both acids to be <<1) [JEE (Adv)-2015 (Paper-2)] 20. The conductance of a 0.0015 M aqueous solution of a weak monobasic acid was determined by using a conductivity cell consisting of platinized Pt electrodes. The distance between the electrodes is 120 cm with an area of cross section of 1 cm2. The conductance of this solution was found to be 5 x 10-7S. The pH of the solution is 4. The value of limiting molar conductivity (A) of this weak monobasic acid in aqueous solution is Z x 102 S cm-1 mol-1. The value of Z is [JEE (Adv)-2017 (Paper-1)] 21. For the electrochemical cell, Mg(s) | Mg2+ (aq, 1 M) || Cu2+ (aq, 1 M)| Cu(s) the standard emf of the cell is 2.70 V at 300 K. When the concentration of Mg2+ is changed to x M, the cell potential changes to 2.67 V at 300 K. The value of x is (given, ==11500 KV, where F is the Faraday constant and R is the gas constant, In(10) = 2.30) R [JEE (Adv)-2018 (Paper-1)] 22. Consider an electrochemical cell: A(s) | An+ (aq, 2 M) || B2n+ (aq, 1 M) | B(s). The value of AH for the cell reaction is twice that of AG° at 300 K. If the emf of the cell is zero, the AS° (in J K-1 mol-1) of the cell reaction per mole of B formed at 300 K is (Given: In(2) = 0.7, R (universal gas constant) = 8.3 J K-1 mol-. H, S and G are enthalpy, entropy and Gibbs [JEE (Adv)-2018 (Paper-2)] 23. Consider a 70% efficient hydrogen-oxygen fuel cell working under standard conditions at 1 bar and 298 K. Its cell reaction is energy, respectively.)
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Please solve 21st question clearly on paper. ??
![Under standard conditions, the number of moles of M* oxidized when one mole of X is converted to Y is
[F = 96500 C mol-]
[JEE (Adv)-2015 (Paper-1)]
19. The molar conductivity of a solution of a weak acid HX (0.01 M) is 10 times smaller than the molar conductivity
of a solution of a weak acid HY (0.10 M). If 2º =1 the difference in their pK, values, pK,(HX) - pK,(HY),
is (consider degree of ionization of both acids to be <<1)
[JEE (Adv)-2015 (Paper-2)]
20. The conductance of a 0.0015 M aqueous solution of a weak monobasic acid was determined by using a
conductivity cell consisting of platinized Pt electrodes. The distance between the electrodes is 120 cm with
an area of cross section of 1 cm2. The conductance of this solution was found to be 5 x 10-7S. The pH of
the solution is 4. The value of limiting molar conductivity (Am) of this weak monobasic acid in aqueous solution
is Z x 102 S cm-1 mol-1. The value of Z is
[JEE (Adv)-2017 (Paper-1)]
21. For the electrochemical cell,
Mg(s) | Mg2+ (aq, 1 M) || Cu2+ (aq, 1 M)| Cu(s)
the standard emf of the cell is 2.70 V at 300 K. When the concentration of Mg2+ is changed to x M, the cell
potential changes to 2.67 V at 300 K. The value of x is
- 11500 KV, where F is the Faraday constant and R is the gas constant, In(10) = 2.30)
R.
(given,
[JEE (Adv)-2018 (Paper-1)]
22. Consider an electrochemical cell: A(s) | An+ (aq, 2 M) || B2n+ (aq, 1 M) | B(s). The value of AH for the cell
reaction is twice that of AG° at 300 K. If the emf of the cell is zero, the AS® (in J K-1 mol-1) of the cell
reaction per mole of B formed at 300 K is
(Given: In(2) = 0.7, R (universal gas constant) = 8.3 J K-1 mol-1. H, S and G are enthalpy, entropy and Gibbs
[JEE (Adv)-2018 (Paper-2)]
che
energy, respectively.)
2))
23.
Consider a 70% efficient hydrogen-oxygen fuel cell working under standard conditions at 1 bar and 298 K.
Its cell reaction is](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fdd6e1eb5-b50c-46cd-af3e-7701b9248179%2Fe5b292ca-e308-40fa-abdb-697078c24a8a%2Fxi1bzzm_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Under standard conditions, the number of moles of M* oxidized when one mole of X is converted to Y is
[F = 96500 C mol-]
[JEE (Adv)-2015 (Paper-1)]
19. The molar conductivity of a solution of a weak acid HX (0.01 M) is 10 times smaller than the molar conductivity
of a solution of a weak acid HY (0.10 M). If 2º =1 the difference in their pK, values, pK,(HX) - pK,(HY),
is (consider degree of ionization of both acids to be <<1)
[JEE (Adv)-2015 (Paper-2)]
20. The conductance of a 0.0015 M aqueous solution of a weak monobasic acid was determined by using a
conductivity cell consisting of platinized Pt electrodes. The distance between the electrodes is 120 cm with
an area of cross section of 1 cm2. The conductance of this solution was found to be 5 x 10-7S. The pH of
the solution is 4. The value of limiting molar conductivity (Am) of this weak monobasic acid in aqueous solution
is Z x 102 S cm-1 mol-1. The value of Z is
[JEE (Adv)-2017 (Paper-1)]
21. For the electrochemical cell,
Mg(s) | Mg2+ (aq, 1 M) || Cu2+ (aq, 1 M)| Cu(s)
the standard emf of the cell is 2.70 V at 300 K. When the concentration of Mg2+ is changed to x M, the cell
potential changes to 2.67 V at 300 K. The value of x is
- 11500 KV, where F is the Faraday constant and R is the gas constant, In(10) = 2.30)
R.
(given,
[JEE (Adv)-2018 (Paper-1)]
22. Consider an electrochemical cell: A(s) | An+ (aq, 2 M) || B2n+ (aq, 1 M) | B(s). The value of AH for the cell
reaction is twice that of AG° at 300 K. If the emf of the cell is zero, the AS® (in J K-1 mol-1) of the cell
reaction per mole of B formed at 300 K is
(Given: In(2) = 0.7, R (universal gas constant) = 8.3 J K-1 mol-1. H, S and G are enthalpy, entropy and Gibbs
[JEE (Adv)-2018 (Paper-2)]
che
energy, respectively.)
2))
23.
Consider a 70% efficient hydrogen-oxygen fuel cell working under standard conditions at 1 bar and 298 K.
Its cell reaction is
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