JEE Main 2014 (Offline) | Electrochemistry Question 149 | Chemistry

The equivalent conductance of NaCl at concentration C and at infinite dilution are $${\lambda _C}$$ and $${\lambda _\infty }$$, respectively. The correct relationship between $${\lambda _C}$$ and $${\lambda _\infty }$$ is given as: (where the constant B is positive)

$${\lambda _C} = {\lambda _\infty } + (B)C$$

$${\lambda _C} = {\lambda _\infty } - (B)C$$

$${\lambda _C} = {\lambda _\infty } - (B)\sqrt C$$

$${\lambda _C} = {\lambda _\infty } + (B)\sqrt C$$

JEE Main 2013 (Offline)

MCQ (Single Correct Answer)

-1

Given

$$E_{C{r^{2 + }}/Cr}^o$$ = -0.74 V; $$E_{MnO_4^ - /M{n^{2 + }}}^o$$ = 1.51 V

$$E_{C{r_2}O_7^{2 - }/C{r^{3 + }}}^o$$ = 1.33 V; $$E_{Cl/C{l^ - }}^o$$ = 1.36 V

Based on the data given above, strongest oxidising agent will be :

Cr³⁺

Mn²⁺

$$MnO_4^ - $$

Cl^-

AIEEE 2012

MCQ (Single Correct Answer)

-1

The standard reduction potentials for Zn²⁺/ Zn, Ni²⁺/ Ni, and Fe²⁺/ Fe are –0.76, –0.23 and –0.44 V respectively. The reaction

X + Y²⁺ $$\to$$ X²⁺ + Y will be spontaneous when :

X = Ni, Y = Fe

X = Ni, Y = Zn

X = Fe, Y = Zn

X = Zn, Y = Ni

AIEEE 2011

MCQ (Single Correct Answer)

-1

The reduction potential of hydrogen half cell will be negative if :

p(H₂) = 1 atm and [H⁺] = 1.0 M

p(H₂) = 1 atm and [H⁺] = 2.0 M

p(H₂) = 2 atm and [H⁺] =1.0 M

p(H₂) = 2 atm and [H⁺] =2.0 M