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Nithyashrri Saravanan
Subject: Chemistry
, asked on 10/3/18
Q. You are acquainted with the construction and working of a lead storage battery. Give the plausible reasons for these facts:
a. There is only a single compartment unlike other electrochemical cells which have two compartments.
b. Addition of water is necessary from time to time for maintenance.
Answer
1
Kurian J
Subject: Chemistry
, asked on 10/3/18
Explain this graph:
Answer
1
Sandra Saju
Subject: Chemistry
, asked on 10/3/18
The products of electrolysis of aqueous NaCl at the respective electrodes are :
Cathode : H
2
Anode : Cl
2
and not O
2
. Explain.
Answer
1
Sandra Saju
Subject: Chemistry
, asked on 9/3/18
Why does a dry cell becomes dead afyer a long time even if it has been not been used ? ( No links please )
Answer
1
Kurian J
Subject: Chemistry
, asked on 8/3/18
Plz explain me this graph..
Also how does molar conductivity changes for weak and strong electrolyte ??
Answer
1
Vinuthna Terala
Subject: Chemistry
, asked on 25/2/18
Pls solve n send asap
Q.10. The following curve is obtained when
λ
m
is plotted against the square root of concentration for two electrolytes A and B.
a) What can you say about the nature of the two electrolytes A and B?
b) How do you account for the increase in
λ
m
for the electrolytes A and B on dilution?
Answer
1
Chaitanya Kapoor
Subject: Chemistry
, asked on 24/2/18
(a) Calculate the mass of Ag deposited at cathode when a current of 2 amperes was
passed through a solution of AgNO
3
for minutes.
(Given: Molar mass of Ag = 108 g mol
–1
1F = 96500 C mo1
–1
)
Answer
1
Kurian J
Subject: Chemistry
, asked on 23/2/18
What do you understand by the signs on the electrode potentials as used in electrochemistry ?
Answer
1
Alifa
Subject: Chemistry
, asked on 21/2/18
An electrochemical cell is made from iron and copper electrodes whose standard reduction potential are - 0.44V and +0.34 V respectively. Find cell potential at 298 K if concentration of Cu2+ and Fe2+ are 0.01 and 0.1 mol/l respectively. Also find maximum work obtained from cell.
Answer
1
Alifa
Subject: Chemistry
, asked on 20/2/18
why is the E0M2+ /M for Cu positive?
Answer
2
Shubhrajyoti Ghosh
Subject: Chemistry
, asked on 20/2/18
No links please
Q.(i). Write with balanced equation, what happens when a mixture of sodium nitrate, Zn-dust and aqueous solution of caustic soda is heated.
Answer
1
Samreen Rizwan
Subject: Chemistry
, asked on 19/2/18
Dear meritnation team,
I think there is a correction in the chapter 3 electrochemistry part 1 of class 12 in the intext question Q.3.3 where the reduction potential is -0.77 and higher values can oxidise it but u have mentioned that even O2 can oxidise but its electrode potential value is -0.68 and hence wont oxidise ferrous ion
Thank you for ur consideration
Regards,
Samreen rizwan
Answer
2
Sandra Saju
Subject: Chemistry
, asked on 10/2/18
Write the anode and the cathode reactions and the overall reaction in Lead Storage battery while operating.
Answer
2
Guna Shekar
Subject: Chemistry
, asked on 5/2/18
AgBr(s) --> Ag
+
+ Br
-
; E
o
= -0.72V.
Value of logK
sp
?
Answer
1
Aparna Sahu
Subject: Chemistry
, asked on 4/2/18
Solve this.
Q
.
1
.
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Answer
1
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What are you looking for?
Q. You are acquainted with the construction and working of a lead storage battery. Give the plausible reasons for these facts:
a. There is only a single compartment unlike other electrochemical cells which have two compartments.
b. Addition of water is necessary from time to time for maintenance.
Cathode : H2
Anode : Cl2 and not O2. Explain.
Also how does molar conductivity changes for weak and strong electrolyte ??
Q.10. The following curve is obtained when is plotted against the square root of concentration for two electrolytes A and B.
a) What can you say about the nature of the two electrolytes A and B?
b) How do you account for the increase in for the electrolytes A and B on dilution?
passed through a solution of AgNO3 for minutes.
(Given: Molar mass of Ag = 108 g mol–1 1F = 96500 C mo1–1)
Q.(i). Write with balanced equation, what happens when a mixture of sodium nitrate, Zn-dust and aqueous solution of caustic soda is heated.
I think there is a correction in the chapter 3 electrochemistry part 1 of class 12 in the intext question Q.3.3 where the reduction potential is -0.77 and higher values can oxidise it but u have mentioned that even O2 can oxidise but its electrode potential value is -0.68 and hence wont oxidise ferrous ion
Thank you for ur consideration
Regards,
Samreen rizwan
Value of logKsp ?