Download App

Redox Reactions — Chemistry STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 ScienceChemistryRedox Reactions2 Marks
Question
  1. Define the term redox couple. Write the practical application of redox couple.
  2. Split $2\text{K}\text{(s)}+\text{Cl}_2\text{(g)}\xrightarrow{ \ \ \ \ \ }2\text{KCl}\text{(s)}$ into oxidation and reducton half reaction.
✓

Answer

  1. Redox couple. It is defined as having together the oxidised and reduced forms of a substance taking part in an oxidation or reduction half reaction e.g. $\frac{\text{Zn}^{2+}}{\text{Zn}}$ and $\frac{\text{Cu}^{2+}}{\text{Cu}}$ form a redoxc couple. application. These are used to make electrochemical cell.
  2. $2\text{K}\xrightarrow{ \ \ \ \ }2\text{K}^++2\text{e}^-$ (oxidation half reaction)

$\text{Cl}_2+2\text{e}^-\xrightarrow{ \ \ \ \ }2\text{Cl}^-$ (reduction half reaction)

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 Redox Reactions→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

The ring systems having following characteristics are aromatic.

  1. Planar ring containing conjugated $\pi$ bonds.
  2. Complete delocalisation of the $\pi$−electrons in ring system i.e. each atom in the ring has unhybridised p-orbital, and
  3. Presence of (4n + 2)$\pi$−electrons in the ring where n is an integer (n = 0, 1, 2, ..........) [Huckel rule].

Using this information classify the following compounds as aromatic/ nonaromatic.

→
The diameter of zinc atom is $2.6 Å$. Calculate (a) radius of zinc atom in pm and (b) number of atoms present in a length of 1.6 cm if the zinc atoms are arranged side by side lengthwise.
→
Why does the first ionisation energy increase as we go from left to right along a given period of periodic table? Which group has highest ionisation enthalpy?
→
Consider the elements:

Cs, Ne, I and F

Identify the element that exhibits only postive oxidation state.

→
How much CaO will be obtained when $200 kg, 8 5 \%$ pure lime stone is heated.
→
Calculate the number of $k J$ of heat necessary to raise the temperature of 60.0 g of aluminium from $35^{\circ} C$ to $55^{\circ} C$. Molar heat capacity of Al is $24 J mol ^{-1} K^{-1}$.
→
What is oxidation state of Cr in [Cr(H2O)6]Cl3
→
At 0°C, ice and water are present in equilibrium.
What will happen on increasing the pressure?
→
What product is obtained when Toluene is treated with one mole of Cl2 in presence of sunlight.
→
An electron is in one of the 3d orbitals. Give the possible values of n, l and ml for this electron.
→