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electrolyte ^

^{0m}(Sm^{2}mol^{-1})BaCl

_{2 }280x10^{-4}NaCl 126.5x10

^{-4}NaOH 248X10

^{-4 The molar conductance at infinite dilution for Ba(OH)2}isThe standard emf of the following cell:

Cd(s)|CdCl

_{2}(aq) (0.10 M)||Cl^{-}| AgCl(s)|Ag(s)In which the cell reaction is 2AgCl(s) + Cd(s) $\to $2Ag(s) +Cd

^{2+}+ 2Cl^{-}(aq) is 0.6915 V at 10^{0}C and 0.6753 V at 25^{0}C. The $\u2206$H of reaction at 25^{0}C is(A) -192.5 kJ (B) -234.7 kJ

(C) 123.5 kJ (D) -167.26 kJ

25. Which of the following solutions will have highest equivalent conductance?

a) 0.01 M NaCl b) 0.050 M NaCl c) 0.005 M NaCl d) 0.02 M NaCl

Q.72. Calculate the current (in mA) required to deposit 0.195 g of platinum metal in 5.0 hours from a solution of ${\left[PtC{l}_{6}\right]}^{2-}$: (atomic weight : Pt = 195)

(1) 310

(2) 31

(3) 21.44

(4) 5.36

through an aqueous solution of potassium succinate, the total volume of gases (at both cathode and

anode) at STP (1 atm and 273 K) is :

${\mathrm{Mn}}^{2+}+2{\mathrm{e}}^{-}\to \mathrm{Mn},\mathrm{E}\xb0=-1.18\mathrm{V}\phantom{\rule{0ex}{0ex}}{\mathrm{Mn}}^{2+}\to {\mathrm{Mn}}^{3+}+{\mathrm{e}}^{-},\mathrm{E}\xb0=-1.51\mathrm{V}$

The E° for the reaction $3{\mathrm{Mn}}^{2+}\to {\mathrm{Mn}}^{0}+2{\mathrm{Mn}}^{3+}$ and possibility of the forward reaction are respectively

(a) –4.18 V and yes (b) +0.33 V and yes

(c) +2.69 V and no (d) –2.69 V and no

1. 44.8 L

2. 22.4 L

3. 11.2 L

4. 5.6 L

Calomel electrode is an example of ?

Detailed explanation of calomel electrode

I don't understand Daniell cell plz. tell me.

[Given : Conductivity of 0.1 M KCl solution is 1.29 S/m]

(i) At 300 k a certain mass of a gas occupies 1 x 10

^{-4}dm^{3}volume. calculate its volume at 450 k and at the same pressure.

(ii) Convert 96

^{o}F to C^{o}

what is meant by nernst?

nomenclature ,iupac , common names..nhi aa raha

so u plz proceed a video of that wid more examples

Q. 1) Equilibrium Constant (K) is related only to E0

cell and not to Ecell. Explain.

Q. 2) Write Nernst equation and calculate EMF of the following cell at 298 K.

Mg Mg Cu Cu (s) (s) 2+ 2+

(0.001 M) (0.0001M)

E = -2.37 V E = + 0.34 V 0 0 Mg Cu

Q. 3) Define Faraday's first law of electrolysis.Calculate the amount of Aluminium is de-

posited by passing 2 Faradary of electricity through 1 mole of fused AlCl3 .

Q. 4) How many gram of chlorine can be produced by the electrolysis of molten NaCl with

a current of 2 ampere for 20 minutes?

Q. 5) Standard electrode potentials of some elements are given below

K /K= -2.93 V + Ag /Ag = 0.80 V + Hg /Hg = 0.79 V 2+

Mg /Mg = -2.37 V 2+

Arrange these metals in their increasing order of reducing power.

Q. 6) ?0 For NaCl, HCl and CH3COONa are 126.4, 425.9 and 91 S cm2

mol-1 respectively

calculate ?0

forCH3COOH.

Q. 7) How is the flow of electric current in a metal wire differs from that in a solution of an

electrolyte?

Q. 8) What is salt bridge? What are its functions in galvanic cell?

how to determine Ecell when an electrode rxn is given?

_{4 (aq) }solution was electrolyzed using inert electrodes by passing current till the pH of the resulting solution was 2. The solution after electrolysis was neutralized and then treated with excess KI and formed I_{2}was then titrated with 0.05M Na_{2}S_{2}O_{3}. Then the required volume (in mL) of Na_{2}S_{2}O_{3}Ans: 90mL

41. The molar ionic conductances at infinite dilution of Mg

^{2+}and Cl^{-}are 106.1 and 76.3 ohm^{-1}cm^{2}mol^{-1}. respectively. The molar conductance of solution of MgCl_{}_{2}at infinte dilution is$\mathrm{a})29.8{\mathrm{ohm}}^{-1}{\mathrm{cm}}^{2}{\mathrm{mol}}^{-1}\phantom{\rule{0ex}{0ex}}\mathrm{b})183.4{\mathrm{ohm}}^{-1}{\mathrm{cm}}^{2}{\mathrm{mol}}^{-1}\phantom{\rule{0ex}{0ex}}\mathrm{c})285.7{\mathrm{ohm}}^{-1}{\mathrm{cm}}^{2}{\mathrm{mol}}^{-1}\phantom{\rule{0ex}{0ex}}\mathrm{d})258.7{\mathrm{ohm}}^{-1}{\mathrm{cm}}^{2}{\mathrm{mol}}^{-1}$

faraday"s 1st low

The charge needed to liberate 0.5 gm atomic weight of a divalent element is$\mathrm{The}\mathrm{charge}\mathrm{required}\mathrm{for}\mathrm{the}\mathrm{reduction}\mathrm{of}1\mathrm{mol}\mathrm{of}{\mathrm{Cr}}_{2}{{\mathrm{O}}_{7}}^{2-}\mathrm{to}{\mathrm{Cr}}^{3+}\mathrm{is}\phantom{\rule{0ex}{0ex}}\mathrm{a})96500\mathrm{C}\phantom{\rule{0ex}{0ex}}\mathrm{b})1.93\times {10}^{5}\mathrm{C}\phantom{\rule{0ex}{0ex}}\mathrm{c})5.79\times {10}^{5}\mathrm{C}\phantom{\rule{0ex}{0ex}}\mathrm{d})2.895\times {10}^{5}\mathrm{C}$

2H

^{+}+^{}e ----->H_{2}Mg

^{2+}+ e ----> Mgwrite the balanced equation for the cell reaction . calculate E

^{0}_{cell}, E_{cell}and delta G^{0}if concentrartion are 1meach and P_{H2}= atm .