Recent questions tagged redox-reactions-and-electrochemistry

Self reduction is possible in which of following :

asked Oct 4, 2018 by meena.p

1 answer

The EMF of cell $Ag,AgCl$ in 0.1M $KCl\parallel sat\;NH_4NO_3\parallel 0.1M\;AgNO_3,Ag$ is $0.45\;volt$ at $25^oC$.Calculate solubility product & solubility of $AgCl(0.1M\; KCl$ is $85\% $dissociated & $0.1M$ $AgNO_3$ is $82\%$ dissociated)

asked Dec 12, 2013 by sreemathi.v

1 answer

At $25^oC$ the specific conductance of a saturated solution of $AgCl$ is $2.68\times 10^{-4}Sm^{-1}$ and that of water with which the solution was made is $0.86\times 10^{-4}Sm^{-1}$.If molar conductances at infinite dilution of $AgNO_3,HNO_3$ and $HCl$ are respectively,$1.33$$\times 10^{-4},421\times 10^{-4}$ and $426\times10^{-4}Sm^2mol^{-1}$,calculate solubility of $AgCl$in grams per $dm^3$ in water at given temperature

asked Dec 12, 2013 by sreemathi.v

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$AgNO_3(aq)\;\overset{\overset{electrolysis}{\Large\rightarrow}}{in\;presence\;of\;Ag\;electrode}$ then wrong statement is

asked Dec 12, 2013 by sreemathi.v

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$AgNO_3(aq)\;\overset{\overset{electrolysis}{\Large\rightarrow}}{in\;presence\;of\;pt\;electrode}$ then at end of electrolysis

asked Dec 12, 2013 by sreemathi.v

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Which of following is correct statement?

asked Dec 12, 2013 by sreemathi.v

1 answer

Which of following graph is correct?

asked Dec 12, 2013 by sreemathi.v

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At what $[HNO_3]$ thermodynamic tendency or reduction of $NO_3^-$ into NO and $NO_2$ by $Ag$ is same?

asked Dec 12, 2013 by sreemathi.v

1 answer

$E_{cell}$ for reduction $NO_3^-\rightarrow NO$ by $Ag(s)$?

asked Dec 12, 2013 by sreemathi.v

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If $X$ is specific resistance of electrolyte solution $Na_7SO_4$ and $y(N)$ is concentration of solution then $\Delta m$ is given by

asked Dec 12, 2013 by sreemathi.v

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$NaOH$(aq base) was added to an aqueous HCl solution gradually and the conductivity of solution was measured.The plot of conductivity vs volume of NaOH added

asked Dec 12, 2013 by sreemathi.v

1 answer

For strong electrolytes find $\Lambda_m^{\infty}$ of $CH_3COOH$

asked Dec 12, 2013 by sreemathi.v

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Among the following,the intensive property is (are)

asked Dec 12, 2013 by sreemathi.v

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Find the time through which an average current 1.93Amp passed to reduce 0.2mol of $MgCl_2$ into Mg .The current efficiency is 60%

asked Dec 11, 2013 by sreemathi.v

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$Cd(Hg).CdSO_4.\large\frac{8}{3}$$H_2O(s)\parallel CdSO_4(sat)Hg_2SO_4(s)Hg$ and cell reaction is $Cd(Hg)+Hg_2SO_4(s)+\large\frac{8}{3}$$H_2O(l)\rightarrow CdSO_4.\large\frac{8}{3}$$H_2O(s)+2Hg(l)$.EMF of cell is 1.1V at $25^oC$.Then $\Delta H^o$ will be

asked Dec 11, 2013 by sreemathi.v

1 answer

Which of following is a wrong statement?

asked Dec 11, 2013 by sreemathi.v

1 answer

The resistance of 0.01M of solution of an electrolyte was found to be $150\Omega$ at $25^oC$.Calculate equivalent conductance.cell constant =$0.80cm^{-1}$ [For given solution $n$ factor =2]

asked Dec 11, 2013 by sreemathi.v

1 answer

Calculate EMF of cell Pt,$H_2(1\;atm)/CH_3COOH(0.1M)\parallel NH_3(aq)(0.01N)/H_2\;atm$.Given :$K_a(CH_3COOH)=1.8\times 10^{-5},K_b(NH_3)=1.8\times 10^{-5}$

asked Dec 11, 2013 by sreemathi.v

1 answer

Self reduction is possible in which of following :

asked Dec 11, 2013 by sreemathi.v

1 answer

Which of the following is wrong statement?

asked Dec 11, 2013 by sreemathi.v

1 answer

Which of the following reactions are not possible ?

asked Dec 11, 2013 by sreemathi.v

1 answer

Arrange $F_2,Cl_2,Br_2,I_2$ in order of increasing SRP

asked Dec 11, 2013 by sreemathi.v

1 answer

$CuSO_4$ solution is not stable in $Zn$ container because of

asked Dec 11, 2013 by sreemathi.v

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$E_{AgI/Ag/I^-}=$?,$E^o_{Ag^+/Ag}=0.8V,K_{spAg I}=10^{-18}$

asked Dec 11, 2013 by sreemathi.v

1 answer

For hydrogen concentration cell in working condition ,the correct relation is

asked Dec 11, 2013 by sreemathi.v

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An electrochemical cell is shown below : $Pt, H_2(1\;atm)|HCL(0.1\;M| CH_3COOH(0.1\;M)|H_2(1\;atm)Pt$ The EMF of the cell will not be zero , because :

asked Dec 11, 2013 by sreemathi.v

1 answer

The potential of hydrogen electrode at $25^{\circ} C$ will be:$(PH_2 =1\; atm, concentration\; of\; H^{+} = 0.1M)$

asked Dec 11, 2013 by sreemathi.v

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$Cu/CuSO_4\parallel AgNO_3/Ag$, Find $K_{eq}$ for the reaction. Given : $E^o_{Cu^{+2}/Cu}=0.34, E^o_{Ag^+/Ag}=0.8, T=298K$

asked Dec 11, 2013 by sreemathi.v

1 answer

For reaction $m^{x+}(aq)+xe^-\rightleftharpoons m(s)$ the nature of graph between $E_{m^{x+}/m}$ vs $\log[m^{x+}]$ is

asked Dec 11, 2013 by sreemathi.v

1 answer

Refer to the below equation :

asked Dec 11, 2013 by sreemathi.v

1 answer