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कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 2nd PUC Class 12

Match the items of Column I and Column II on the basis of data given below: EF2F-Θ = 2.87 V, ELi+Li-Θ = − 3.5V, EAu3+AuΘ = 1.4 V, EBr2Br-Θ = 1.09 V Column I Column II (i) F2 (a) metal is the stronges - Chemistry

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प्रश्न

Match the items of Column I and Column II on the basis of data given below:

`E_("F"_2//"F"^-)^Θ` = 2.87 V, `"E"_(("Li"^(+))//("Li"^-))^Θ` = − 3.5V, `"E"_(("Au"^(3+))//("Au"))^Θ` = 1.4 V, `"E"_(("Br"_(2))//("Br"^-))^Θ` = 1.09 V

Column I Column II
(i) F2 (a) metal is the strongest reducing agent
(ii) Li (b) metal ion which is the weakest oxidising agent
(iii) Au3+ (c) non metal which is the best oxidising agent
(iv) Br (d) unreactive metal
(v) Au (e) anion that can be oxidised by Au3+
(vi) Li+ (f) anion which is the weakest reducing agent
(vii) F (g) metal ion which is an oxidising agent
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उत्तर

Column I Column II
(i) F2 (c) non metal which is the best oxidising agent
(ii) Li (a) metal is the strongest reducing agent
(iii) Au3+ (g) metal ion which is an oxidising agent
(iv) Br (e) anion that can be oxidised by Au3+
(v) Au (d) unreactive metal
(vi) Li+ (b) metal ion which is the weakest oxidising agent
(vii) F (f) anion which is the weakest reducing agent
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पाठ 3: Electrochemistry - Exercises [पृष्ठ ४१]

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एनसीईआरटी एक्झांप्लर Chemistry [English] Class 12
पाठ 3 Electrochemistry
Exercises | Q IV. 55. | पृष्ठ ४१

संबंधित प्रश्‍न

Define “Molar conductivity”.


Define limiting molar conductivity.


Why conductivity of an electrolyte solution decreases with the decrease in concentration ?


The conductivity of 0.20 mol L−1 solution of KCl is 2.48 × 10−2 S cm−1. Calculate its molar conductivity and degree of dissociation (α). Given λ0 (K+) = 73.5 S cm2 mol−1 and λ0 (C1) = 76.5 S cm2 mol−1.


Why does the conductivity of a solution decrease with dilution?


Calculate the degree of dissociation (α) of acetic acid if its molar conductivity (Λm) is 39.05 S cm2 mol−1.

(Given \[\ce{\lambda^{\circ}_{(H^+)}}\] = 349.6 S cm2 mol−1 and \[\ce{\lambda^{\circ}_{(CH_3COO^-)}}\] = 40.95 S cm2 mol−1)


 How can you determine limiting molar conductivity,   0 m for strong electrolyte and weak electrolyte?


In the plot of molar conductivity (∧m) vs square root of concentration (c1/2), following curves are obtained for two electrolytes A and B:

Answer the following:
(i) Predict the nature of electrolytes A and B.
(ii) What happens on extrapolation of ∧m to concentration approaching zero for electrolytes A and B?


Molar conductivity denoted by the symbol Λm is related to the conductivity of the solution by the equation (k is the conductivity and c is the concentration).


Solutions of two electrolytes ‘A’ and ‘B’ are diluted. The Λm of ‘B’ increases 1.5 times while that of A increases 25 times. Which of the two is a strong electrolyte? Justify your answer.


Write the cell reaction of a lead storage battery when it is discharged. How does the density of the electrolyte change when the battery is discharged?


Why on dilution the m Λm of \[\ce{CH3COOH}\] increases very fast, while that of \[\ce{CH3COONa}\] increases gradually?


Consider figure and answer the question to given below.

How will the concentration of Zn2+ ions and Ag+ ions be affected after the cell becomes ‘dead’?


An increase in equivalent conductance of a strong electrolyte with dilution is mainly due to :-


Which of the following halogen acids is the strongest reducing agent?


The solubility of Co2[Fe(CN)6] in water at 25°C from the following data:

Conductivity of saturated solution of Co2[Fe(CN)6] = 2.06 × 10−6 ohm−1 cm−1 and that of water = 4.1 × 10−7 ohm−1 cm−1. The ionic molar conductivities of Co2+ and [Fe(CN)6]4− are 86 and 444 ohm−1 cm2 mol−1 respectively, is ______ × 10−6 mol/L.


Assertion (A) : Conductivity decreases with decrease in concentration of electrolyte.

Reason (R) : Number of ions per unit volume that carry the current in a solution decreases on dilution.


The solution of two electrolytes A and B are diluted. ^m of B increases 1.5 times while that of A increases 25 times. Which of the two is a strong electrolyte? Give a reason.


Suggest a way to determine the `∧_"m"^∘`value of water.


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