$A$ saturated solution of $KNO_3$ with agar-agar is used to make a 'salt-bridge' because
- Asize of $K^{+}$ is greater than that of $NO_3^{-}$
- Bvelocity of $NO_3^{-}$ is greater than that of $K^{+}$
- Cvelocities of $K^{+}$ and $NO_3^{-}$ are nearly the same
- DBoth velocities and sizes of $K^{+}$ and $NO_3^{-}$ are nearly the same
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Which of the following are intensive properties?
$(i)$ Molar conductivity
$(ii)$ Electromotive force $(EMF)$
$(iii)$ Resistance
$(iv)$ Heat capacity
$(i)$ Molar conductivity
$(ii)$ Electromotive force $(EMF)$
$(iii)$ Resistance
$(iv)$ Heat capacity
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View SolutionLimiting molar conductivity of $Mg^{2+}$ and $Cl^{-}$ ions in water is $106.0 \ S \ cm^2 \ mol^{-1}$ and $76.3 \ S \ cm^2 \ mol^{-1}$ respectively. The limiting molar conductivity of magnesium chloride (in $S \ cm^2 \ mol^{-1}$) in water is
Which of the following reactions occurs at the cathode during the recharging of a lead storage battery?
Give the symbolic representation of the galvanic cell obtained by using the following standard reduction potentials at $298 \ K$ and calculate its standard cell potential $(E^o_{cell})$.
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$(ii)$ $E^o_{Zn^{2+}|Zn} = -0.76 \ V$
$(i)$ $E^o_{Ag^{+}|Ag} = 0.80 \ V$
$(ii)$ $E^o_{Zn^{2+}|Zn} = -0.76 \ V$
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