Advertisements
Advertisements
प्रश्न
Explain the term energy changes in a chemical change or reaction.
Advertisements
उत्तर
Energy changes in a chemical reaction:
“Is the difference between the chemical energy of the REACTANTS and the PRODUCTS”.
APPEARS IN
संबंधित प्रश्न
Define endothermic reactions. Give two examples of each.
FILL IN THE BLANK
In a................ reaction heat energy is absorbed.
Give scientific reasons.
While preparing dil. Sulphuric acid from concentrated conc. sulphuric acid in the laboratory the concentrated sulphuric acid is, add slowly to water with constant stirring.
What do you observe? When
Lead nitrate is heated.
Differentiate between the following:
A catalyst and a promoter.
Chemical reactions may proceed with evolution of heat. Give an example.
Give an example with a balanced equation, of the following reaction:
endothermic reaction
Select the correct answer from the options given below:
State the gaseous product formed, when
An exothermic reaction takes place between ammonia and neutral gas.
Give examples of the endothermic process.
Identify the type of chemical reaction given below:
\[\ce{2KClO3 -> 2KCl + 3O2 ^}\]
