Question
Define the following terms:
- Molar conductivity $(\wedge_{\text{m}})$
- Secondary batteries
✓
Answer
- Molar conductivity is defined as the conductivity due to all the ions produced by dissolving one mole of an electrolyte in solution.
- In the secondary batteries, the reactions can be reversed by an external electrical energy source. These batteries can be recharged by passing electric current and used again and again.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Aryl halides are extremely less reactive towards nucleophilic substitution. Predict and explain the order of reactivity of the following compounds towards nucleophilic substitution:
Using the standard electrode potentials given in Table $3.1,$ predict if the reaction between the following is feasible$: Fe^{3+}(aq)$ and $I^– (aq)$
→(a) Calculate $\Delta G^{0}$ for the reaction
$Zn(s) + Cu^{2+}(aq) \longrightarrow Zn^{2+}(aq) + Cu(s)$.
Given: $E^{0}$ for $Zn^{2+}/Zn = -0.76 V$ and
$E^{0}$ for $Cu^{2+}/Cu = +0.34 V$,
$R = 8.314 J K^{-1} mol^{-1}$,
$F = 96500 C mol^{-1}$.
(b) Give two advantages of fuel cells.
→$Zn(s) + Cu^{2+}(aq) \longrightarrow Zn^{2+}(aq) + Cu(s)$.
Given: $E^{0}$ for $Zn^{2+}/Zn = -0.76 V$ and
$E^{0}$ for $Cu^{2+}/Cu = +0.34 V$,
$R = 8.314 J K^{-1} mol^{-1}$,
$F = 96500 C mol^{-1}$.
(b) Give two advantages of fuel cells.
The reaction between $A$ and $B$ is first order with respect to $A$ and zero order with respect to $B$. Fill in the blanks in the following table:
→| Experiment | $[A]/mol\ L^{-1}$ | $[B]/mol\ L^{-1}$ | Initial rate/mol $L^{-1}\ min^{-1}$ |
| $I$ | $0.1$ | $0.1$ | $2.0 \times 10^{-2}$ |
| $II$ | $-$ | $0.2$ | $4.0 \times 10^{-2}$ |
| $III$ | $0.4$ | $0.4$ | $-$ |
| $IV$ | $-$ | $0.2$ | $2.0 \times 10^{-2}$ |
Discuss the physical properties of carboxylic acids in terms of their physical state and boiling point.
What are anomers? Give one example.
If the density of some lake water is $1.25\ g\ mL^{-1}$ and contains $92\ g$ of $Na^+$ ions per kg of water, calculate the molarity of $Na^+$ ions in the lake.
→Give structures of the products you would expect when each of the following alcohol reacts with $\ce{SOCl_2}$
$(i)$ Butan$-1-ol$
$(ii) \ 2-$Methylbutan$-2-ol$
→$(i)$ Butan$-1-ol$
$(ii) \ 2-$Methylbutan$-2-ol$
How is it that several transition metal act as catalysts ? Give two examples of reactions catalysed by them ?
Calculate the degree of dissociation $(\alpha)$ of acetic acid if its molar conductivity $(\wedge_m)$ is $39.05 S \ cm^2\ mol^{–1}.$
Given$\lambda^0 (H^+) = 349.6 S \ cm^2\ mol^{–1}$ and $\lambda^0 (CH_3COO^–) = 40.9 S \ cm^2\ mol^{–1}$
→Given$\lambda^0 (H^+) = 349.6 S \ cm^2\ mol^{–1}$ and $\lambda^0 (CH_3COO^–) = 40.9 S \ cm^2\ mol^{–1}$