(a) How many mole of mercury will be produced by electrolysing 1.0 M Hg `(NO_(3))_(2)` solution with a current of 2.00 A for 3 hours? [Hg`(NO_(3))_(2)

Question

(a) How many mole of mercury will be produced by electrolysing 1.0 M Hg `(NO_(3))_(2)` solution with a current of 2.00 A for 3 hours? [Hg`(NO_(3))_(2)

(a) How many mole of mercury will be produced by electrolysing 1.0 M Hg `(NO_(3))_(2)` solution with a current of 2.00 A for 3 hours? [Hg`(NO_(3))_(2) = 200.6 g mol^(-1)`].
(b) A voltaic cell is set up at `25^(@)`C with the following half-cells `Al^(3+)` (0.001M) and `Ni^(2+)` (0.50M). Write an equation for the reaction that occurs when the cell generates an electric current and determine the cell potential.
(Given : `E_(Ni^(2+)//Ni)^(2)=- 0.25 V,E_(Al^(3+)//Al)^(@)= - 1.66V`)

Monjur Alahi

8 views

2025-01-04 04:42

1 Answers

Related Questions

One mole of aqueous solution of the complex `CoCl_(3)5H_(2)O` when treated with excess of aqueous `AgNO_(3)` solution gave one mole of white pptof AgC

2 Answers 6 Views

A reaction at 300 K with `DeltaG^(@)` `=- 1743 J//mol` consister of 3 mole of A(g), mole of B(g) and 3 mole of C (g). If A, B and C(g) . If A,B and C

2 Answers 5 Views

The value of `DeltaG_(f)^(@)` of gaseous mercury is `31 K J //"mole"`. At what total external pressure mercury start boiling at `25^(@)C`. `[R=8.3 J//

2 Answers 7 Views

A 95 mass precent solution of ethanol is further diluted with water. If the mole fraction of ethanol in diluted solution is 0.25, what is the mole fra

2 Answers 6 Views

In a culture, the bacteria count is 1,00,000. The number is increased by 10% in 2 hours. In how many hours will the count reach 2,00,000, if the rate

2 Answers 4 Views

The height of a mercury barometer is 75 cm at sea level and 50 cm at the top of a hill. Ration of density of mercury to that of air is `10^(4)`. The h

2 Answers 4 Views

A drop of mercury of radius 2 mm is split into 8 identical droplets. Find the increase in surface energy. Surface tension of mercury `=0.465Jm^-2`

2 Answers 4 Views

A current of 3.7 ampere is passed for 6 hours between platinum electrodes in 0.5 litre of a 2 M solution of `Ni(NO_(3))_(2)`. What will be the molarit

2 Answers 5 Views

A solution containing one mole per litre each of `Cu(NO_(3))_(2),AgNO_(3),Hg(NO_(3))_(2)` and `Mg(NO_(3))_(2)` is being electrolysed by using inerty e

2 Answers 5 Views

One mole of an organic amide (A) on alkaline hydrolysis gives one mole of `NH_(3)` and one mole of a monobasic acid of equivalent mass 74. What is the

2 Answers 6 Views

Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

(a). `m=ZxxIxxt`
`m=(200.6xx2xx3xx60xx60)/(2xx96500)`
`m=(43329.6)/(1930)=22.45g`
Number of moles `=(22.45)/(200.6)=0.112` mole
(b). `[Al(s)toAl^(3+)(aq)+3e^(-)]xx2`
`underline([Ni^(2+)(aq)+2e^(-)toNi(s)]xx3)`
`2Al(s)+3Ni^(2+)(aq)to2Al^(3+)(aq)+3Ni(s)`
`E_(cell)=(E_(Ni^(2+)//Ni)^(0)-E_(Al^(3+)//Al)^(0))-(0.0591)/(6)log(([Al^(3+)]^(2))/([Ni^(2+)]^(3)))`
`=[-0.25V-(-1.66V)-(0.0591)/(6)log((10^(-3))^(2))/((0.50)^(3)))`
`=1.41V-(0.0591)/(6)log((8xx10^(-6))/(1)`
`=1.41-(0.0591)/(6)log[8+log10^(-6)]`
`=1.41V-(0.0591)/(6)xx-5.0969`
`=1.41V-(0.0591)/(6)`
`=1.41V+0.0502V=1.4602V`