Advertisements
Advertisements
Question
In the context of redox reactions, the removal of hydrogen from a substance is known as:
(a) oxidation
(b) dehydration
(c) reduction
(d) dehydrogenation
Solution
(a) oxidation
Removal of hydrogen from the substance is known as oxidation.
APPEARS IN
RELATED QUESTIONS
Define ‘redox reaction’. Give one example.
In the following reaction between lead sulphide and hydrogen peroxide:
PbS (s) + 4H2O2(aq) → PbSO4(s) + 4H2O(1)
(a) which substance is reduced?
(b) Which substance is oxidised?
Define reduction.
Identify from the reaction the reactants that undergo oxidation and reduction.
\[\ce{NiO + H2 -> Ni + H2O}\]
State whether the following conversion is oxidation or reduction:
K → K+ + e-
Balance the given chemical reaction as per the instructions below.
\[\ce{NaOH + H2SO4 -> Na2SO4 + H2O}\]
Oxidation means losing electrons then what is reduction?
Rusting of iron involves a chemical reaction which is a combination of:
Identify the oxidising agent (oxidant) in the following reactions
`3"Fe" + 4"H"_2"O" -> "Fe"_3"O"_4 + 4"H"_2`
The tarnishing of metals is due to the formation of ______.
Choose the odd one out and write the reason:
