Advertisements
Advertisements
Question
You are given the following chemical equation:
\[\ce{Mg_{(s)} + CuO_{(s)} -> MgO_{(s)} + Cu_{(s)}}\]
This equation represents:
Options
decomposition reaction as well as displacement reaction.
combination reaction as well as double displacement reaction.
redox reaction as well as displacement reaction.
double displacement reaction as well as redox reaction.
Advertisements
Solution
Redox reaction as well as displacement reaction.
Explanation:
This is a displacement reaction because the more reactive metal, magnesium (Mg), displaces the less reactive metal, copper (Cu), from its oxide compound. It is simultaneously a redox reaction because magnesium gains oxygen (undergoes oxidation) while copper oxide loses oxygen (undergoes reduction).
APPEARS IN
RELATED QUESTIONS
Define corrosion.
Write the chemical formula of rust.
Identify in the following reaction (a) the substance oxidised, and (b) the substance reduced:
\[\ce{ZnO + C -> Zn + CO}\]
The addition of hydrogen to a substance is called ______ whereas removal of hydrogen is called ______.
Is oxidation an exothermic or an endothermic reaction?
Explain the following in terms of gain or loss of oxygen with one example:
Reduction
Identify from the following reaction the reactants that undergo oxidation and reduction.
\[\ce{2Ag2O → 4 Ag + O2 \uparrow}\]
Is it essential that oxidation and reduction must occur side by side in a chemical reaction? Explain
Divide the following reactions into oxidation and reduction half-reaction:
Zn + Pb2+→ Pb + Zn 2+
Which of the following statements about hydrogen is incorrect?
Complete and balance the following equation:
Fe + H2O →___________+____________
State what is oxidising agent. Give an example of oxidising agent in the gaseous, liquid, and solid form.
Identify the following reactions as oxidation or reduction
- Na → Na+ + e
- Fe3+ + 2 e- → Fe+
Select the oxidising agent for the following reaction:
\[\ce{H2S + I2 -> 2HI + S}\]
Which among the following are physical or chemical change?
Curding of milk
The tarnishing of metals is due to the formation of ______.
______ is a metal that has a high resistance to corrosion.
Define oxidation number.
The oxidizing agent in the equation \[\ce{S + 2H2SO4 -> 3SO2 + 2H2O}\] is ______.
