The number of correct statements from the following is : A. E _ c… - Vidyadip

Question

The number of correct statements from the following is :

$A.$ $E _{\text {cell }}$ is an intensive parameter.

$B.$ A negative $E^{\Theta}$ means that the redox couple is a stronger reducing agent than the $H ^{+} / H _2$ couple.

$C.$ The amount of electricity required for oxidation or reduction depends on the stoichiometry of the electrode reaction.

$D.$ The amount of chemical reaction which occurs at any electrode during electrolysis by a current is proportional to the quantity of electricity passed through the electrolyte.

✓

Answer

Given statements $A, B, C$ and $D$ are correct.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

JEE STD 11 Science question papers→Gujarat Board STD 11 Science question papers→Gujarat Board question paper generator→

Similar questions

Rate of reaction is given by following rate law $ - \frac{{d\left[ c \right]}}{{dt}} = \frac{{{k_1}\,\left[ c \right]}}{{1 + {k_2}\,\left[ c \right]}}$ order of reaction when concentration is verh high

If solubility of $NaCl$ at ${20\,^o}C$ is $35\,gm$ per $ 100\,gm$ of water. Then on adding $50\,gm$ of $NaCl$ to the same volume at same temperature the salt remains undissolved is .......... $gm$.

Combustion of $1$ mole of benzene is expressed at

$\mathrm{C}_6 \mathrm{H}_6(1)+\frac{15}{2} \mathrm{O}_2(\mathrm{~g}) \rightarrow \mathrm{CO}_2(\mathrm{~g})+3 \mathrm{H}_2 \mathrm{O}(1) \text {. }$

The standard enthalpy of combustion of $2 \mathrm{~mol}$ of benzene is - ' $x$ ' $k J$.

$\mathrm{x}=$. . . . . . . . . .

$(1)$ standard Enthalpy of formation of $1 \mathrm{~mol}$ of $\mathrm{C}_6 \mathrm{H}_6(1)$, for the reaction $6 \mathrm{C}$ (graphite) $+3 \mathrm{H}_2(\mathrm{~g}) \rightarrow \mathrm{C}_6 \mathrm{H}_n(1)$ is $48.5 \mathrm{~kJ} \mathrm{~mol}^{-1}$.

$(2)$ Standard Enthalpy of formation of $1 \mathrm{~mol}$ of $\mathrm{CO}_2(\mathrm{~g})$, for the reaction $\mathrm{C}$ (graphite) $+\mathrm{O}_{2(\mathrm{~g})} \rightarrow \mathrm{CO}_2(\mathrm{~g})$ is $-393.5 \mathrm{~kJ} \mathrm{~mol}^{-1}$.

$(3)$ Standard and Enthalpy of formation of $1 \mathrm{~mol}$ of $\mathrm{H}_2 \mathrm{O}(1)$, for the reaction $\mathrm{H}_2(\mathrm{~g})+\frac{1}{2} \mathrm{O}_2(\mathrm{~g}) \rightarrow \mathrm{H}_2 \mathrm{O}(1)$ is $-286 \mathrm{~kJ} \mathrm{~mol}^{-1}$.

3-Methylhex-2-ene on reaction with HBr in presence of peroxide forms an addition product (A). The number of possible stereoisomers for ' A ' is _________________ .

Consider the dissociation of the weak acid $HX$ as given below $HX(aq) \rightleftharpoons H^{+}(aq)+X^{-}(aq), Ka=1.2 \times 10^{-5}\ (K _{ a }$ : dissociation constant$)$
The osmotic pressure of $0.03 M$ aqueous solution of $HX$ at $300 K$ is $ ......... \times 10^{-2}$ bar $($nearest integer$)$
$($Given : $R =0.083 L^2$ bar $Mol ^{-1} K^{-1} )$

In the equation ${H_2}S + 2HN{O_3} \to 2{H_2}O + 2N{O_2} + S$. The equivalent weight of hydrogen sulphide is

For a first order reaction rate constant is given as $\log_{10}K = 12 - \frac{6\times10^3}{T}$ , then what will be value of temperature if its half life period is $6.93\times10^{-3}\, \min$ .......... $K$

The $EAN$ of platinum in potassium hexachloroplatinate $(IV)$ is :

For the thermal decomposition of $N _2 O _5(g)$ at constant volume, the following table can be formed, for the reaction mentioned below :
$
2 N_2 O_5(g) \rightarrow 2 N_2 O_4(g)+O_2(g)
$

S.No.	Time/s	Total pressure / (atm)
1	0	0.6
2	100	('X')

$x=$ __________ $\times 10^{-3} atm$ [nearest integer] Given : Rate constant for the reaction is $4.606 \times 10^{-2} s^{-1}$.

For the reaction taking place in the cell:

$Pt ( s )\left| H _{2}( g )\right| H ^{+}( aq ) \| Ag ^{+}( aq ) \mid Ag ( s )$

$E _{\text {Cell }}^{0}=+0.5332 V$.

The value of $\Delta_{ f } G ^{0}$ is $kJ \,mol ^{-1} \cdot$ (in nearest integer)