Electrochemical equivalent for copper is `3.2xx10^(-7) kg C^(-1)` An electric current of 3.0 A is passed through a copper voltamater for one minture .How much will be deposited during electrolysis?
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An electric current of 100 ampere is passed through a moltan liquid of sodium chloride for 5 hours. Calculate the volume of chlorine gas liberated at
The reaction taking place at anode is : `underset(71.0 g)(2Cl^(-)) rarr underset((71.0 g),("1 mole"))(Cl_(2))+underset(2xx96500" coulomb")(2e^(-))` `Q=I xx t=100 xx 5xx 60xx 60` coulomb The amount of chlorine liberated by passing...
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A current of 1.70 A is passed through 300.0 mL of 0.160 M solution of a `ZnSO_(4)` for 230 s with a current efficiency of 90% . Find out the molarity
Amount of charge passed `=1.70xx230` coulomb Amount of actual charge passed `=90/100xx1.70xx230` `=351.9` coulomb No. of moles of Zn deposited by passing 351.9 coulomb of charge `=1/(2xx96500)xx351.9=0.000182` Molarity of `Zn^(2+)`...
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When a quantity of electricity is passed through `CuSO_(4)` solution, 0.16 g of copper gets deposited. If the same quantity of electricity is passed t
Correct Answer - B Number of equivalents of copper deposited `=0.16/32=0.005` Volume of `H_(2)` gas at STP `=11.2xx0.005` `=0.056` litre `=56 cm^(3)`
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An electric current is passed through three cells connected in series containing `ZnSO_(4)`, acidulated water and `CuSO_(4)` respectively. What amount
`because` Eq. of `Cu=Eq`. Of `Zn=Eq`. Of `H_(2)` `(6.25)/(31.70)=(W_(Zn))/(32.6)=(W_(H_(2)))/(1)`
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One g equivalent of Na metal is formed from electrolyis of fused NaCl. No of "mole" of Al from the fused `Na_(3)AlF_(6)` with the same current passed
Correct Answer - C `underset(1" mole")(Na^(+))+underset(1" faraday")(e^(-)to)Na(s)` `AP^(+)+underset(1" faraday")(3e^(-)to)Al(s)` No. of mole of `Al=(1)/(3)` mole
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A current of 1.0 A was passed for 2 hr through a solution of cuprocyanide and 0.3745 g of copper was deposited on the cathode. Calculate the current e
Correct Answer - A m(theoretical)`=(63.5xx0.1xx7200)/(96500)=0.4738g` `therefore%` efficiency `=(0.3745)/(0.4738)xx100=79%`
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A current of 5A is passed fir 5hours through three voltameters arranged in series, containing solution of copper sulphate. Silver nitrate and sulphuri
Correct Answer - `100.62xx10^(-3)kg,29.65xx10^(-3)kg, and 0.94xx10^(-3)"kg respectively"`
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Two pont chargees `q_(1) " and " q_(2) " of " 2xx10^(-8) C " and " -2xx10^(-8) C` respectively are placed 0.4 m apart. Calculate the electric field at
Correct Answer - `900 NC^(1)`, towards the -ve change
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A copper wire of diameter 0.16 cm is connected in series to an aluminium wire of diameter 0.25 cm. A current of 10 A is passed through them. Find (i)
Correct Answer - `4.96xx10^(6) Am^(-2), 1.28xx10^(-4) ms^(-1)`
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Identify the hydrocarbon which on ozonolysis gives :- (a) Only acetone (b) 1 equivalent of propanal + 1 equivalent of formaldehyde (c ) 1 equivalent o
Correct Answer - `(a) CH_(3)-underset(CH_(3))underset(|)(C)=underset(CH_(3))underset(|)(C)-CH_(3) " "(b)CH_(3)CH_(2)CH=CH_(2)` (c ) `CH_(3)-underset(CH_(3))underset(|)(C)=CH-C_(3)`
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