Advertisements
Advertisements
Question
Give one example in the case where supplying energy [given below] is necessary for a chemical reaction.
Heat energy
Advertisements
Solution
Heat Energy:
On heating the reactants – the reacting particles, collide swiftly and with greater intensity.
Example:
Heat on zinc carbonate:
\[\ce{ZnCO3 ->[\triangle] ZmO + CO2 [g]}\]
APPEARS IN
RELATED QUESTIONS
When hydrogen is passed over copper oxide, copper and steam are formed. Write a balanced equation for this reaction and state which of the chemicals are:
- elements
- compounds
- reactants
- products
- metal
- non-metal
The chemical reaction between quicklime and water is characterised by ______.
Balance the following equation:
Fe2O3 + CO → Fe + CO2
Balance the following equation:
NO2 +H2O → HNO2 + HNO3
Write the balanced chemical equation of the following reaction.
potassium dichromate + hydrochloric acid → Potassium chloride + chromium chloride + water + chlorine
\[\ce{MnO2 + 4HCl -> MnCl2 + 2H2O + Cl2}\]
0.02 moles of pure MnO2 is heated strongly with conc. HCl. Calculate moles of acid required.
Give word equation for the following chemical reaction and give the names of the product formed.
Zn + 2HC1→ ZnCl2 + H2
Balance the following simple equation:
ZnS + O2 → ZnO + SO2
Balance the following simple equation:
Al + H2SO4 → Al2(SO4)3 + H2
Which among the following statement(s) is(are) true? ‘Exposure of silver chloride to sunlight for a long duration turns grey due to
- The formation of silver by the decomposition of silver chloride.
- sublimation of silver chloride.
- decomposition of chlorine gas from silver chloride.
- oxidation of silver chloride.
