Advertisements
Advertisements
Question
Name:
a substance that oxidizes concentrated HCl to chlorine.
Solution
MnO2
manganese(IV) oxide
APPEARS IN
RELATED QUESTIONS
When copper powder is heated strongly in air, it forms copper oxide. Write a balanced chemical equation for this reaction. Name (i) substance oxidised, and (ii) substance reduced.
Electrolysis is a redox process. Explain.
Is it essential that oxidation and reduction must occur side by side in a chemical reaction? Explain
State, giving reason, whether the substances printed in bold letters have been oxidized or reduced.
PbO + CO → Pb + CO2
Explain the term redox reaction with an example involving the reaction of hydrogen sulphide with chlorine.
Which among the following are physical or chemical change?
Sublimation of solid ammonium chloride
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.
Write a short note on oxidizing and reducing agents.
Define oxidation number.
Find the oxidation number of the element in the following compound.
Mg in MgO
