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Mitali
Subject: Chemistry
, asked on 26/3/18
Please solve the second part... reduction potential in neutral medium
Answer
1
Mitali
Subject: Chemistry
, asked on 26/3/18
Please give the solution.. and kindly explain as well
Answer
1
Aishwarya
Subject: Chemistry
, asked on 14/3/18
Solve this:
M
n
O
4
-
+
I
-
→
M
n
O
2
+
I
2
a
c
i
d
i
c
M
e
d
i
u
m
Answer
1
Alok Singh
Subject: Chemistry
, asked on 9/3/18
What is oxidation state of P in HPO2 - ?
Answer
1
Ishika Sahay
Subject: Chemistry
, asked on 4/3/18
Give the standard electrode potentials:
K
+
/K = -2.93 V, Ag
+
/Ag = +0.80 V, Cr
+3
/Cr = -0.74 V
Out of these electrode which will be the strongest reducing agent?
Answer
1
Ishika Sahay
Subject: Chemistry
, asked on 1/3/18
The process of electrolysis has immense industrial applications like electro-refining of metals, electrolysis etc. The principle is used for electroplating also.
What is an electrolytic cell?
2.Name the electrode which carries negative charge
Can graphite be used as an electrode? Why?
4.
Give one difference between electrolytic cell and electrochemical cell.
Answer
1
Krithikha B
Subject: Chemistry
, asked on 25/2/18
the largest oxidation number of an element depends on outer electronic configuration.with which of the following out ec the element will exhibit largest oxidation number?
3d1 4s2
3d3 4s2
3d54s1
3d5 4s2.
Answer
1
Pragnil Savjani
Subject: Chemistry
, asked on 25/2/18
with example define nucleophile and electrophile, producer gas and water gas
Answer
1
Dhriti Gupta
Subject: Chemistry
, asked on 14/2/18
why atleast one product in decomposition reaction be in elemental state
Answer
1
Divyansh Saxena
Subject: Chemistry
, asked on 5/2/18
Volume V1 ml of 0.1 M K2Cr2O7 is needed for complete oxidation of 0.678g N2H2 in acidic mediums. The volume of 0.3 M KMnO4 needed for same oxidation in acidic medium will be
Answer
1
Divyansh Saxena
Subject: Chemistry
, asked on 2/2/18
A 0.46g sample of As2O3 required 25 ml of kmno4 solution for titration the molarity of kmno4 is
Answer
1
Divyansh Saxena
Subject: Chemistry
, asked on 1/2/18
a 0.46g sample as AS203 required 25 ml of KMnO4 solution for its titration the molarity of KMNO4
Answer
1
Divyansh Saxena
Subject: Chemistry
, asked on 1/2/18
how many millilitres of 0.1 N H2SO4 solution will be required for complete reaction with a solution containing 0.125 g of pure na2so4
Answer
2
Divyansh Saxena
Subject: Chemistry
, asked on 1/2/18
Solve this:
An organic compound contains oxygen, carbon, hydrogen and sulphur.
A sample Of it with a mass Of 1.045 g Was burned in oxygen to give gaseous CO
2
, H
2
O, SO
2
These gases passed through 500.0 mL of an acidified 0.0200M KMnO
4
Solution, which caused the SO
2
, to be oxidized to SO
4
2
-
. Only part of the available KMnO
4
was reduced to Mn
2
+
. Next. 50.00 mL of 0.0300 M SnCl
2
was added to a 50.00 mL portion of this solution. which still contained unreduced KMnO
4
There was more than enough added SnCl
2
to cause all of the remaining MnO
4
-
in the 50 mL portion to be reduced to Mn
2
+
. The excess Sn
2
+
that remained after the reaction was then titrated with 0.0100M KMnO
4
, requiring 27.28 mL Of the KMnO
4
, solution to reach the end point. What was the percentage of sulfur in the original sample of the organic compound that had been burned?
Answer
1
Divyansh Saxena
Subject: Chemistry
, asked on 1/2/18
4 question
Answer
1
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What are you looking for?
K+/K = -2.93 V, Ag+/Ag = +0.80 V, Cr+3/Cr = -0.74 V
Out of these electrode which will be the strongest reducing agent?
- What is an electrolytic cell?
2.Name the electrode which carries negative charge- Can graphite be used as an electrode? Why?
4.Give one difference between electrolytic cell and electrochemical cell.3d1 4s2
3d3 4s2
3d54s1
3d5 4s2.
An organic compound contains oxygen, carbon, hydrogen and sulphur.
A sample Of it with a mass Of 1.045 g Was burned in oxygen to give gaseous CO2, H2O, SO2
These gases passed through 500.0 mL of an acidified 0.0200M KMnO4 Solution, which caused the SO2, to be oxidized to SO42-. Only part of the available KMnO4 was reduced to Mn2+. Next. 50.00 mL of 0.0300 M SnCl2 was added to a 50.00 mL portion of this solution. which still contained unreduced KMnO4
There was more than enough added SnCl2 to cause all of the remaining MnO4- in the 50 mL portion to be reduced to Mn2+. The excess Sn2+ that remained after the reaction was then titrated with 0.0100M KMnO4, requiring 27.28 mL Of the KMnO4, solution to reach the end point. What was the percentage of sulfur in the original sample of the organic compound that had been burned?