Advertisements
Advertisements
प्रश्न
Give one example in the case where supplying energy [given below] is necessary for a chemical reaction.
Light energy
Advertisements
उत्तर
Light Energy:
In presence of light – the molecules of the reactants absorb light energy and collide swiftly and react rapidly.
Example:
Photosynthesis in plants:
Plants manufacture food [glucose] from carbon dioxide and water – in the presence of chlorophyll [green pigment in plants] and sunlight.
\[\ce{Carbon dioxide + water ⇌[chlorophyll][sunlight] glucose + oxygen}\]
APPEARS IN
संबंधित प्रश्न
Complete and balance the following equation:
Ca(OH)2 + .......... \[\ce{-> CaCO3 + H2O}\]
Write word equation for the following skeletal equation:
\[\ce{NaOH + H2SO4 -> Na2SO4 + H2O}\]
Balance the following equation. Also name the products formed.
\[\ce{Ag + S -> Ag2S}\]
Balance the equation stepwise.
Ag(s) + HCl(aq) → AgCl ↓+ H2 ↑
Write the balanced chemical equation of the following reaction.
aluminium carbide + water → aluminium hydroxide + methane
A student mixes sodium sulphate powder in barium chloride powder. What change would the student observe on mixing the two powders? Justify your answer and explain how he can obtain the desired change.
\[\ce{2KClO3->[MnO2] 2KCl + 3O2[g] - is a balanced equation.}\]
State what is a ‘balanced equation’.
Write a balanced equation for the following word equation:
Calcium hydroxide + Ammonium chloride → Calcium chloride + Water + Ammonia
Underline the compound in the equation given below, it is incorrectly balanced and write the correct balancing for the same.
2H2O + 2Cl2 → 2HCl + O2
Write scientific reason.
Adding zinc particles to a solution of copper sulphate makes the blue solution colorless.
