Ask a Doubt
Request a call back

Join NOW to get access to exclusive study material for best results

CBSE Class 11-science Answered

Ques1) Standard electrode potentials are Fe 2+ / Fe ( E° = -0.44 V) Fe 3+ / Fe2+ (E° = 0.77 V) If Fe 2+, Fe 3+ and Fe blocks are kept together , then (a) Fe3+ increases (b) Fe3+ decreases (c) Fe2+ / Fe3+ remains unchanged (d) Fe2+ decreases please give explaination as I know the answer is (b) but don't know the reason
Asked by govtsecschoolnayaganv051 | 16 Sep, 2018, 09:26: PM
answered-by-expert Expert Answer
The cell formed will be :
 
Fe divided by Fe to the power of 2 plus end exponent space parallel to space Fe to the power of 3 plus end exponent divided by space Fe to the power of 2 plus end exponent
 
Eºcell = 0.44 + 0.77 = 1.21 V
 
Metals having higher negative values of their electrode potential can displace metal having lower values from their salt solution
 
Therefore the magnitude of Fe3+ ions will decrease.
Answered by Ramandeep | 17 Sep, 2018, 12:07: PM

Concept Videos

Multiple Choice Questions Practice Test Subjective Questions Webinar Subjective Questions Pre Board Assessment
Answered Unanswered My Questions My Answers
CBSE 11-science - Chemistry
Ques1) Standard electrode potentials are Fe 2+ / Fe ( E° = -0.44 V) Fe 3+ / Fe2+ (E° = 0.77 V) If Fe 2+, Fe 3+ and Fe blocks are kept together , then (a) Fe3+ increases (b) Fe3+ decreases (c) Fe2+ / Fe3+ remains unchanged (d) Fe2+ decreases please give explaination as I know the answer is (b) but don't know the reason
Asked by govtsecschoolnayaganv051 | 16 Sep, 2018, 09:26: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Chemistry
What is Standard Electrode Potential?
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Chemistry
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Chemistry
Can a solution of 1 M CuSO4 be stored in a vessel made of Nickel metal? Given that E0 Ni, Ni2+ = 0.25 V, E0 Cu, Cu2+ = - 0.34 V
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Chemistry
The electrode potential of four metallic elements (A, B, C and D) are +0.80V, -0.76V, +0.12V and +0.34V respectively. Arrange them in order of decreasing electropositive character.
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Chemistry
Choose the strongest oxidizing agent among F2, Br2, I2, Cl2.
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Chemistry
I2 and Br2 are added to a solution containing Br- and I- ions. What reaction will occur if, I2 + 2e-  2I-; E0 = +0.54 V and Br2 + 2e-  2Br-; E0 = +1.09 V?
Asked by Topperlearning User | 14 Jun, 2016, 11:01: AM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Chemistry
Is it possible to store Copper Sulphate Solution in a Zinc vessel?
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Chemistry
A solution of silver nitrate was stirred with iron rod. Will it cause any change in the concentration of silver and nitrate ions?
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
CBSE 11-science - Chemistry
The standard electrode potentials of a few metals are given below: AI(-0.66V), Cu(+0.34V), Li(-3.05V), Ag(+0.80V) and Zn(-0.76V) Which of these will behave as the strongest oxidizing agent and which as the strongest reducing agent?
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
ANSWERED BY EXPERT ANSWERED BY EXPERT
My Class Videos Tests ₹ Plans Ask a Doubt

Be a Top Scorer in the Exam with Test Series and Test Generator!

Enrol Now
×