ElectrochemistryHard
Question
The standard reduction potentials E° of the following systems are
System E° (volts)
(i) MnO4- + 8H+ + 5e- → Mn2+ + 4H2O 1.51
(ii) Sn4+ + 2e- → Sn2+ 0.15
(iii) Cr2O72- + 14H+ + 6e- → 2Cr3+ + 7H2O .33
(iv) Ce4+ + e- → Ce3+ 1.61
The oxidising power of the various species decreases in the order
System E° (volts)
(i) MnO4- + 8H+ + 5e- → Mn2+ + 4H2O 1.51
(ii) Sn4+ + 2e- → Sn2+ 0.15
(iii) Cr2O72- + 14H+ + 6e- → 2Cr3+ + 7H2O .33
(iv) Ce4+ + e- → Ce3+ 1.61
The oxidising power of the various species decreases in the order
Options
A.Ce4+ > Cr2 O72- > Sn4+ > MnO4-
B.Ce4+ > MnO4- > Cr2 O72- > Sn4+
C.Cr2O72- > Sn4+ > Ce4+ > MnO4-
D.MnO4- > Ce4+ > Sn4+ > Cr2 O72-
Solution
Higher the std. reduction potential, higher is the oxidising power.
Create a free account to view solution
View Solution FreeMore Electrochemistry Questions
C1 - C2 bond is shortest in...At 25°C, the solubility product of CuCl is 2.0 × 10−7 and $E_{Cl^{-}|CuCl|Cu}^{o}$ is 0.128 V. The value of $E_{Cu^{+}|C...The standard reduction potential for the reactions: Ag+ + e− → Ag and Ag(NH3)2+ + e− → Ag + 2NH3 are +0.79 V and +0.37 V...The ECell for Ag(s)|AgI (satd)||Ag+ (0.10 M)|Ag (s) is +0.413 V. What is the value of Ksp of AgI?...Conductance measurements can be used to detect the end point of acid-base titrations. Which of the following plots corre...