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Srishti Ram
Subject: Science
, asked 10 hours, 9 minutes ago
Concentration of solution depends upon hydrogen ions?
Answer
1
Prachi
Subject: Science
, asked 11 hours, 11 minutes ago
Forests are called the lungs of the Earth. Collect information covering about ways to conserve forest
Answer
1
Angelina Baruah
Subject: Science
, asked 11 hours, 33 minutes ago
Kindly answer these two questions. Thanks
Answer
1
Angelina Baruah
Subject: Science
, asked 11 hours, 34 minutes ago
Kindly answer these two. Thanks
Answer
1
Niket
Subject: Chemistry
, asked 11 hours, 58 minutes ago
Calculate the molar conductivity of a 0.20 M solution of KCl which has a conductivity of
0.0248 S cm?1
at 298 K.
Answer
2
Niket
Subject: Chemistry
, asked 11 hours, 58 minutes ago
A solution of CuSO4 is electrolysed for 20 minutes with a current of 2.5 amperes. What
is the mass of copper deposited at the cathode? (1 F = 96487 C)
Answer
1
Niket
Subject: Chemistry
, asked 11 hours, 59 minutes ago
Read the passage given below and answer the following questions: (3)
A potential difference which develops between the electrode and the electrolyte is called
electrode potential. When the concentrations of all the species involved in a half-cell is unity
then the electrode potential is known as standard electrode potential. Standard electrode
potentials are used for various applications. In a galvanic cell, the half-cell in whichoxidation takes place is called anode and it has a negative potential with respect to the
solution. The other half-cell in which reduction takes place is called cathode and it has a
positive potential with respect to the solution. The cell potential is the difference between
the electrode potentials (reduction potentials) of the cathode and anode.
(a) What can be inferred from the negative electrode potential of the oxidation half-cell Zn
to Zn2+
?
(b) Write the cell representation of the reaction given below:
Cu(s) + 2Ag+
(aq) ? Cu2+
(aq) + 2Ag(s)
(c) Calculate the emf for the following reaction:
Mn3+ + Fe2+ ? Mn2+ + Fe3+
Given, Mn3+ + e? ? Mn2+
; E
0 = 1.5 V and Fe3++ e? ? Fe2+
; E
0 = 0.77 V
Answer
1
Niket
Subject: Chemistry
, asked 12 hours ago
65 g of ethylene glycol (C2H6O2) is mixed with 900 g of water. Calculate the freezing point
depression of the solution obtained. (Kf =1.86 K kg mol?1
)
Answer
1
Niket
Subject: Chemistry
, asked 12 hours, 1 minute ago
What will be the effect of pH on an aqueous solution of sodium chloride when it is
electrolyzed? Justify by writing the net cell reaction.
Answer
1
Aryan Tiwari
Subject: English
, asked 12 hours, 2 minutes ago
As a reporter write a report on the plight of the animals in the zoo. Suggest some measures to be taken to improve their condition.
Answer
1
Sherry
Subject: Maths
, asked 12 hours, 7 minutes ago
According to 2011 census the overall male literacy in India was 80.89%, whereas women literacyrate was just 64.64%.The number of literate males and females in a village of Bihar is 5000 if in a year the number ofliterate males were to increase by 5% and that of females by 3% annually ,the literate populationwould grow to 5202 at the end of the year.
`2 he graph of given equation
Answer
1
Kush Sharma
Subject: Social Science
, asked 12 hours, 15 minutes ago
Nation state was the result of nationalism. Explain.
Answer
1
Harsh Kumar
Subject: Maths
, asked 12 hours, 15 minutes ago
Find mode and median
Answer
1
Anushka Pankhuri
Subject: Physics
, asked 12 hours, 21 minutes ago
How potential on the both the end points of B bulb is same?
Answer
1
Anushka Pankhuri
Subject: Physics
, asked 12 hours, 22 minutes ago
Plz ans ques no.2
Answer
1
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Next
What are you looking for?
0.0248 S cm?1
at 298 K.
is the mass of copper deposited at the cathode? (1 F = 96487 C)
A potential difference which develops between the electrode and the electrolyte is called
electrode potential. When the concentrations of all the species involved in a half-cell is unity
then the electrode potential is known as standard electrode potential. Standard electrode
potentials are used for various applications. In a galvanic cell, the half-cell in whichoxidation takes place is called anode and it has a negative potential with respect to the
solution. The other half-cell in which reduction takes place is called cathode and it has a
positive potential with respect to the solution. The cell potential is the difference between
the electrode potentials (reduction potentials) of the cathode and anode.
(a) What can be inferred from the negative electrode potential of the oxidation half-cell Zn
to Zn2+
?
(b) Write the cell representation of the reaction given below:
Cu(s) + 2Ag+
(aq) ? Cu2+
(aq) + 2Ag(s)
(c) Calculate the emf for the following reaction:
Mn3+ + Fe2+ ? Mn2+ + Fe3+
Given, Mn3+ + e? ? Mn2+
; E
0 = 1.5 V and Fe3++ e? ? Fe2+
; E
0 = 0.77 V
depression of the solution obtained. (Kf =1.86 K kg mol?1
)
electrolyzed? Justify by writing the net cell reaction.
`2 he graph of given equation