Top 100+ questions in Education

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Q: Calculate the standard cell potentials of galvanic cell in whiCHM the following reactions take place `:` `a. Cr(s) +3Cd^(2+)(aq) rarr 2Cr^(3+)(aq)+3Cd

Calculate the standard cell potentials of galvanic cell in whiCHM the following reactions take place : a.Cr(s)+ ... the reactions . Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: Write the Nernst equation and `EMF` of the following cells at `298K :` `a.` `Mg(s)|Mg^(2+)(0.001M)||Cu^(2+)(0.0001M)|Cu(s)` `b.` `Fe(s)|Fe^(2+)(0.001M

Write the Nernst equation and EMF of the following cells at 298K: a. Mg(s)|Mg2+(0.001M)||Cu2+(0.0001M)|Cu(s) b. ... )|H2(g)(1bar)|Pt(s) Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: In the button cells widely used in watCHMes and other devices the following reaction takes place : `Zn(s)+Ag_(2)O(s)+H_(2)O(l) rarr Zn^(2+)(aq)+2Ag(s)

In the button cells widely used in watCHMes and other devices the following reaction takes place : Zn(s)+Ag2O(s) ... for the reaction. Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: The conductivity of `0.20M` solution of `KCl` at `298K` is `0.0248 S cm^(-1)` . Calculate its molar conductivity.

The conductivity of 0.20M solution of KCl at 298K is 0.0248Scm-1 . Calculate its molar conductivity. Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: The resistance of a conductivity cell contaning `0.001M KCl` solution at `298K` is `1500Omega`. What is the cell constant if conductivity of `0.001M K

The resistance of a conductivity cell contaning 0.001MKCl solution at 298K is 1500Ω . What is the cell constant if ... 3Scm-3Scm-1 . Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: The conductivity of sodium CHMloride at `298K` has been determine at different concentrations and the results are given below `:` `{:(Concentration(M)

The conductivity of sodium CHMloride at 298K has been determine at different concentrations and the results are given below : ... ∘ m . Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: The conductivity of `0.00241 M` acetic acid is `7.896xx10^(-5)Scm^(-1)`. Calculate its molar conductivity. If `wedge_(m)^(@)` for acetic acid is `390.

The conductivity of 0.00241M acetic acid is 7.896 10-5Scm-1 . Calculate its molar conductivity. If ∧ ∘ ... its dissociation constant ? Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: How muCHM CHMarge is required for the following reductions `:` `a. 1 mol of Al^(3+) to Al` `b.` ` 1 mol of Cu^(2+) to Cu` `c.` `1 mol of MnO_(4)^(c-)`

How muCHM CHMarge is required for the following reductions : a.1molofAl3+→Al b. 1molofCu2+→Cu c. 1molofMnO c- 4 to Mn2+? Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: How muCHM electricity in terms of Faraday is required to produce. `a.` `20.0g` fo `Ca` from molten `CaCl_(2)` `b.` `40g` of `Al` from molten `Al_(2)O_

How muCHM electricity in terms of Faraday is required to produce. a. 20.0g fo Ca from molten CaCl2 b. 40g of Al from molten Al2O3 Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: How muCHM electricity is required in coulomb for the oxidation of ltbr. `a.` `1 mol of H_(2)O to O_(2)` `b`. `1 mool ` of `FeO` to `Fe_(2)O_(3)`

How muCHM electricity is required in coulomb for the oxidation of ltbr. a. 1molofH2O→O2 b . 1m∞l of FeO to Fe2O3 Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: A solution of `Ni(NO_(3))_(2)` is electrolyzed between platium electrodes using a current of `5A` for `20 mi n`. What mass of `Ni` is deposited at the

A solution of Ni(NO3)2 is electrolyzed between platium electrodes using a current of 5A for 20min . What mass of ... at the cathode ? Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: Three electrolytic cell `A,B`, and `C` contaning solutions of `ZnSO_(4), AgNO_(3)`, and `CuSO_(4)`, respectively, are connected in series. A steady cu

Three electrolytic cell A,B , and C contaning solutions of ZnSO4,AgNO3 , and CuSO4 , respectively, are connected ... were deposited ? Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: Using the standard electrode potentials given in Table, predict if the reaction between the following is feasible`:` `a. Fe^(3+)(aq)` and `I^(c-)(aq)`

Using the standard electrode potentials given in Table, predict if the reaction between the following is feasible: a.Fe3+( ... +(aq) . Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: Predict the products of electrolysis in eaCHM of the following `:` `a.` An aqueous solution of `AgNO_(3)` with silver electrodes. `b.` An aqeous solut

Predict the products of electrolysis in eaCHM of the following : a. An aqueous solution of AgNO3 with silver ... platinum electrodes. Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: What would happen if no salt bridge is used in electroCHMemical cell ?

What would happen if no salt bridge is used in electroCHMemical cell ? Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: What is the use of platinum foil in an `SHE` ?

What is the use of platinum foil in an SHE ? Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: How the reduction potential of an electrode can be decreased?

How the reduction potential of an electrode can be decreased? Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: `Cl_(2)` and `F_(2)` are added to a solution containing `1M` eaCHM of `Cl^(c-)` and `Br^(c-)` . What reaction will occur ?

Cl2 and F2 are added to a solution containing 1M eaCHM of Clc- and Brc- . What reaction will occur ? Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: `Cl_(2)` and `Br_(c-)` are added to a solution containing `1M` each of `Cl^(c-)` and `Br^(c-)`. What reaction will occur ?

Cl2 and Brc- are added to a solution containing 1M each of Clc- and Brc- . What reaction will occur ? Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: `Br_(2)` and `I_(2)` are added to a solution containing `1M` each of `Br^(c-)` and `I^(c-)` . What reaction will occur ?

Br2 and I2 are added to a solution containing 1M each of Brc- and Ic- . What reaction will occur ? Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: Why equilibrium constant is related to `E_("cell")^(c-)` but not to `E_("cell")` ?

Why equilibrium constant is related to E c- cell but not to Ecell ? Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: What is the free energy change `(DeltaG)` for galvanic and electrolytic cel ?

What is the free energy change (ΔG) for galvanic and electrolytic cel ? Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: If an electrochemical cell is made in which current does not flow, what it suggest ?

If an electrochemical cell is made in which current does not flow, what it suggest ? Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

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Q: In each of the following pairs, which will conuct more electricity? `a.` `Cu` wire at `30^(@)C` and `60^(@)C`. `b.` `KBr` solution at `30^(@)C` and `6

In each of the following pairs, which will conuct more electricity? a. Cu wire at 30∘C and 60∘C . b. ... 1M propanioc acid solutions. Select the correct answer from above options...