Advertisements
Advertisements
प्रश्न
Identify the oxidising agent (oxidant) in the following reactions.
`"CuO" + "H"_2 -> "Cu" + "H"_2"O"`
Advertisements
उत्तर
An oxidizing agent is one that oxidizes other substances (by removing hydrogen or adding oxygen) while also reducing itself.
`"CuO" + "H"_2 -> "Cu" + "H"_2"O"`
Cupric oxide (CuO) acts as an oxidizing agent in the aforementioned reaction, converting hydrogen (H2) into water (H2O) and copper (Cu).
APPEARS IN
संबंधित प्रश्न
Which of the statements about the reaction below are incorrect?
\[\ce{2PbO(s) + C(s) → 2Pb(s) + CO2(g)}\]
- Lead is getting reduced.
- Carbon dioxide is getting oxidised.
- Carbon is getting oxidised.
- Lead oxide is getting reduced.
A shiny brown-coloured element ‘X’ on heating in air becomes black in colour. Name the element ‘X’ and the black-colored compound formed.
What are anti-oxidants? Why are they added to fat and oil containing foods?
Give an example of an oxidation reaction.
Indicate which of the following statement is true and which is false:
The removal of hydrogen from a substance is called reduction.
TRUE \ FALSE
Hydrogen is a good oxidizing agent.
Identify the substances that are oxidised and the substances that are reduced in the following reaction.
\[\ce{CuO_{(s)} + H2_{(g)} -> Cu_{(s)} + H2O_{(l)}}\]
How would you change a metal like Cu into its ions?
Identify from the reaction the reactants that undergo oxidation and reduction.
2Mg + O2 → 2MgO
State, giving reason, whether the substances printed in bold letters have been oxidized or reduced.
H2S + Cl2→ 2HCl + S
State whether the following conversion is oxidation or reduction:
PbO2 + SO2→ PbSO4
State whether the following conversion is oxidation or reduction:
2Cl- - e-→ Cl2
In the following reaction: A+ + B → A + B+. Write half-reactions for this reaction and name:
- oxidizing agent
- substance oxidized
- reducing agent
Divide the following reactions into oxidation and reduction half-reaction:
Zn + Pb2+→ Pb + Zn 2+
A metal oxide that is reduced by hydrogen is
Name:
a substance that oxidizes concentrated HCl to chlorine.
When Ag is exposed to air it gets a black coating of ____________.
The formation of brown colour on the freshly unit surface of vegetables and fruits is because ______ of organic compounds present in them.
What are redox reactions? Give examples.
