Download App

PART - 2 CH - 7 Redox Reactions — Chemistry STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceChemistryPART - 2 CH - 7 Redox Reactions2 Marks
Question
How standard electrode potential can be calculated and state its importance.
✓

Answer

We can't calculate the electrode potential of a single electrode. Hence it can be calculated by combining it with standard electrode.
Standard electrode potential or Standard reduction potential $=$ Electrode potential of cathode - Electrode potential of anode
$E _{\text {cell }}^0= \underset{\text{cathode}}{E ^0}- E _{\text {anode }}^0$
The electrode potential of hydrogen electron is considered at zero in standard conditions. Hence, when it is attached with unknown electrode, the electrode potential can be calculated.

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

More "2 Marks Questions" from PART - 2 CH - 7 Redox Reactions→PART - 2 CH - 7 Redox Reactions — all question types→Chemistry STD 11 Science question papers→Rajasthan Board STD 11 Science question papers→Rajasthan Board question paper generator→

Similar questions

Calculate (a) $\Delta G^{\ominus}$ and (b) the equilibrium constant for the formation of $NO _2$ from NO and $O _2$ at 298 K
$NO ( g )+\frac{1}{2} O _2(g) \rightleftharpoons NO _2(g)$
where
$\begin{array}{l}\Delta_{ f } G^{\ominus}\left( NO _2\right)=52.0 kJ / mol \\ \Delta_{ f } G^{\ominus}( NO )=87.0 kJ / mol \\ \Delta_{ f } G^{\ominus}\left( O _2\right)=0 kJ / mol \end{array}$
→
Find the conjugate base for the species H2O and NH4+.
→
In any reversible reaction what is the effect of pressure on it?
→
 PbO and PbO2 react with HCl according to following chemical equations:

$2\text{PbO}+4\text{HCl}\xrightarrow{ \ \ \ \ \ \ \ }2\text{PbCl}_2+2\text{H}_2\text{O}$

$\text{PbO}_2+4\text{HCl}\xrightarrow{\ \ \ \ \ \ \ \ }\text{PbCl}_2+\text{Cl}_2+2\text{H}_2\text{O}$

Why do these compounds differ in their reactivity? 

→
What are nodal planes and what will be the number of nodal planes for 4 s orbital?
→
Enthalpy of combustion of carbon to $CO _2$ is $-393.5 kJ mol ^{-1}$. Calculate the heat released upon formation of 35.2 g of $CO _2$ from carbon and dioxygen gas.
→
Give reason for the following.
  1. Ionic compounds are soluble in water whereas covalent compounds are mostly insoluble in water.
  2. Ionic compounds have higher melting points than the covalent compounds.
→
Compound with carbon-carbon double bond, such as ethylene (C2H4) and hydrogen in a reaction is called hydrogenation.

$\text{C}_2\text{H}_4(\text{g})+\text{H}_2(\text{g})\overrightarrow{\ \ \ \ \ \ }\ \text{C}_2\text{H}_6(\text{g})$

Calculate enthalpy change for the reaction using the following combustion data:

$\text{C}_2\text{H}_4(\text{g})+3\text{O}_2(\text{g})\overrightarrow{\ \ \ \ \ }\ 2\text{CO}_2(\text{g})+2\text{H}_2\text{O(g)};$ $\Delta\text{H}=-1401\text{kJ/ mol}$

$\text{C}_2\text{H}_6(\text{g})+\frac{7}{2}\text{O}_2(\text{g})\overrightarrow{\ \ \ \ \ \ }\ 2\text{CO}_2(\text{g})+3\text{H}_2\text{O(l)};$ $\Delta\text{H}=-1550\text{kJ/ mol}$

$\text{H}_2(\text{g})+\frac{1}{2}\text{O}_2(\text{g})\overrightarrow{\ \ \ \ \ \ }\ \text{H}_2\text{O(l)};$ $\Delta\text{H}=-286.0\text{kJ/ mol}$

→
Arrange the following elements in increasing order of metallic character: B, Al, Mg and K.
→
Give the name and atomic number of the inert gas tom in which total number of d-electrons is equal to difference in number of total 'p' and s-electrons.
→