Advertisements
Advertisements
Question
State the effect of an exothermic reaction on the surroundings.
Advertisements
Solution
In exothermic reactions, heat is given out, causing a rise in temperature.
\[\ce{CH4 + 2O2 -> CO2\uparrow + 2H2O + Heat}\]
APPEARS IN
RELATED QUESTIONS
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.
State which type of chemical reaction proceeds with evolution of heat energy.
Complete the statement by filling in the blank with the correct word:
The element molybdenum used in the reaction of nitrogen with hydrogen at elevated temperatures is an example of a ________.
Complete the statement by filling in the blank with the correct word:
The reaction of coke with steam to give water gas is an example of an __________ reaction.
Give an example of an endothermic reaction.
Chemical reactions may proceed with absorption of heat. Give an example.
Differentiate between the following:
Electrolytic decomposition and photochemical decomposition.
Respiration is a ______ change.
Match the following:
| Colum I | Column II | ||
| 1. | Alloying | a. | Exothermic change |
| 2. | Crystallization | b. | Periodic change |
| 3. | Soap powder + water | c. | Mixing of molten solids |
| 4. | Seasonal changes | d. | Pure solid |
Identify the type of chemical reaction given below:
\[\ce{2KClO3 -> 2KCl + 3O2 ^}\]
