Advertisements
Advertisements
प्रश्न
State whether the following conversion is oxidation or reduction:
PbO2 + SO2→ PbSO4
Advertisements
उत्तर
When there is an increase in the oxidation state, the compound is said to undergo oxidation.
When there is a decrease in the oxidation state, the compound undergoes a reduction.
PbO2 → Reduction, SO2 → Oxidation.
APPEARS IN
संबंधित प्रश्न
Why does the colour of copper sulphate solution change when an iron nail is dipped in it?
Give one example of an oxidation-reduction reaction which is also a combination reaction.
State whether the following conversion is oxidation or reduction:
K → K+ + e-
In the following reaction: A+ + B → A + B+. Write half-reactions for this reaction and name:
- oxidizing agent
- substance oxidized
- reducing agent
For the reaction PbO + H2→ Pb + H2O, which of the following statements is wrong?
Choose terms from the options given in brackets to complete this sentence.
When CuO reacts with hydrogen,………………… is reduced and ……………….is oxidized to ………………….
(CuO, H2, Cu, H2O)
When the positive charge on an ion increases or the negative charge on them decreases it is called as _______.
Choose the odd one out and write the reason:
Identify the following reactions as oxidation/reduction/redox reaction
CuO+H2 → Cu+H2O
Answer the questions based on the equation below:
\[\ce{CH3 - CH2 - OH ->[{[O]}][K2Cr2O7/H2SO4] CH3 - COOH}\]
- What type of reaction is it?
- What is the role of the chemical written on the arrow?
- Give one example of one such type of chemical as in answer (b).
