Advertisements
Advertisements
प्रश्न
During the reaction of some metals with dilute hydrochloric acid, following observations are made.
Some bubbles of a gas are seen when lead (Pb) is reacted with the acid.
Explain this observation giving suitable reason.
उत्तर
Lead (Pb) reacts with dilute HCl to evolve hydrogen gas accompanied by bubbles.
`"Pb"("s") + 2"HCl"("aq") -> "PbCl"_2("aq") + "H"_2("g")`
APPEARS IN
संबंधित प्रश्न
Corrosion can be prevented by using ……………. solution.
The chemical formula for rust is.............. .
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.
Identify the component oxidised in the following reaction:
H2S + Cl2 → S + 2HCl
In the context of redox reactions, the removal of hydrogen from a substance is known as:
(a) oxidation
(b) dehydration
(c) reduction
(d) dehydrogenation
Fill in the blank
Oxidation is the removal of ......................and addition of ....................
Divide the above equation into oxidation and reduction half-reactions.
Name:
an oxidizing agent that does not contain oxygen.
Give two test for an oxidising agent.
Select the oxidising agent for the following reaction:
\[\ce{H2S + I2 -> 2HI + S}\]
