New chat PYQ Library Doubts Rank report

Sign in to see Recents

Sign in to save progress →

Electrochemistry question

2021 · 31 Aug · Shift 1 · Q14

Guest · try one question or challengeGuest · try one question or challenge

PYQ Library
JEE Main
Chemistry
Electrochemistry
2021 · 31 Aug · Shift 1 · Q14

Electrochemistry question

2021 · 31 Aug · Shift 1 · Q14

JEE MainChemistryElectrochemistryNumerical+4 / −1

Consider the following cell reaction :

C{d_{(s)}} + H{g_2}S{O_{4(s)}} + {9 \over 5}{H_2}{O_{(l)}}\rightleftharpoons

CdS{O_4}.{9 \over 5}{H_2}{O_{(s)}} + 2H{g_{(l)}}

The value of

E_{cell}^0

is 4.315 V at 25

^\circ

C. If

\Delta

H

^\circ

=

-

825.2 kJ mol

-

1, the standard entropy change

\Delta

S

^\circ

in J K

-

1 is

\underline{\hspace{2cm}}

. (Nearest integer) [Given : Faraday constant = 96487 C mol

-

1]

Numerical answer

More from Electrochemistry

Match List - I with List - II Choose the most appropriate answer from the options given below : Includes table2021 · MCQ
The Gibbs change (in J) for the given reaction at [ $C u^{2 +}$ ] = [ $S n^{2 +}$ ] = 1 M and 298K is : $C u$ (s) + $S n^{2 +}$ (aq.) $\to$ $C u^{2 +}$ (aq.) + $S n$ (s); ( $E_{S n^{2 +} ∣ S n}^{0} = - 0.16 V$ , $E_{C u^{2 +} ∣ C u}^{0} = 0.34 V$ ) Take F = 96500…2020 · Numerical
For the disproportionation reaction 2 $C u^{+}$ (aq) ⇌ $C u$ (s) + $C u^{2 +}$ (aq) at 298 K. ln K (where K is the equilibrium constant) is × 10–1. Given : ( $E_{C u^{2 +} / C u^{+}}^{0} = 0.16 V E_{C u^{+} / C u}^{0} = 0.52 V \frac{R T}{F} = 0.025$ …2020 · Numerical
Let C $N a C l$ and C $B a S O_{4}$ be the conductances (in S) measured for saturated aqueous solutions of $N a C l$ and $B a S O_{4}$ , respectively, at a temperature T. Which of the following is false?2020 · MCQ
The photoelectric current from $N a$ (Work function, w0 = 2.3 eV) is stopped by the output voltage of the cell Pt(s) | $H_{2}$ (g, 1 Bar) | $H C l$ (aq., pH =1) | AgCl(s) | Ag(s). The pH of aq. $H C l$ required to stop the photoelectric current…2020 · Numerical
An acidic solution of dichromate is electrolyzed for 8 minutes using 2A current. As per the following equation $C r_{2} O_{7}^{2 -}$ + $14 H^{+}$ + 6e– $\to$ $2 C r^{3 +}$ + $7 H_{2} O$ The amount of $C r^{3 +}$ obtained was 0.104 g. The efficiency of the…2020 · Numerical
$E_{C u^{2 +} ∣ C u}^{0}$ = +0.34 V $E_{Z n^{2 +} ∣ Z n}^{0}$ = -0.76 V Identify the incorrect statement from the option below for the above cell : Includes diagram2020 · MCQ
250 mL of a waste solution obtained from the workshop of a goldsmith contains 0.1 M $A g N O_{3}$ and 0.1 M $A u C l$ . The solution was electrolyzed at 2V by passing a current of 1A for 15 minutes. The metal/metals electrodeposited will be [ $E_{A g^{+} / A g}^{0}$ …2020 · MCQ