Advertisements
Advertisements
प्रश्न
Balance the following equation:
\[\ce{H2O2 -> H2O + O2}\]
Advertisements
उत्तर
\[\ce{2H2O2 -> 2H2O + O2}\]
APPEARS IN
संबंधित प्रश्न
Write the balanced chemical equation for the following reaction.
\[\ce{Zinc + Silver nitrate -> Zinc nitrate + Silver}\]
Write the balanced chemical equation for the following reaction.
\[\ce{Calcium hydroxide + Carbon dioxide → Calcium carbonate + Water}\]
Give one example of a chemical reaction.
Balance the following equation:
\[\ce{NH3 + CuO -> Cu + N2 + H2O}\]
Balance the following equation:
\[\ce{NaOH + H2SO4 -> Na2SO4 + H2O}\]
Write a balanced chemical equation from the following information:
An aqueous calcium hydroxide solution (lime water) reacts with carbon dioxide gas to produce a solid calcium carbonate precipitate and water.
Balance the following chemical equation:
\[\ce{MnO2 + HCl -> MnCl2 + Cl2 + H2O}\]
Rewrite the following information in the form of a balanced chemical equation:
Magnesium burns in carbon dioxide to form magnesium oxide and carbon.
With the help of an appropriate example, justify that some of the chemical reactions are determined by a change in temperature.
Give a chemical equation for the reaction involved in the above case.
When metal X is treated with a dilute acid Y, then a gas Z is evolved which burns readily by making a little explosion.
- Name any two metals which can behave like metal X.
- Name any two acids which can behave like acid Y.
- Name the gas Z.
- Is the gas Z lighter than or heavier than air?
- Is the reaction between metal X and dilute acid Y exothermic or endothermic?
- By taking a specific example of metal X and dilute acid Y, write a balanced chemical equation for the reaction which takes place. Also indicate physical states of all the reactants and products.
Write symbolic representation for the following word equation and balance them :
Carbon + Oxygen → Carbon dioxide.
Balance the following equation :
Fe + O2 → Fe3 O4
Balance the following equation. Also name the product formed.
`"Na"+ "H"_2 "O" → "NaOH"+ "H"_2`
Write the chemical equation for the following word equation and balance them.
Calcium oxide + Carbon dioxide → Calcium carbonate
Balance the following equation:
Pb3O4 → PbO + O2
Balance the following equation:
C + H2SO4 → CO2 + H2O + SO2
Write the balanced chemical equation of the following reaction. potassium bicarbonate + sulphuric acid → potassium sulphate + carbon dioxide + water
Match column A with column B.
| Column A | Column B |
| (a) Blue salt changes to white and then black | (i) Ammonium dichromate |
| (b) Orange coloured compound changes to green. | (ii) Iodine |
| (c) Red compound changes to brown and then yellow. | (iii) Zinc Nitrate |
| (d) White to yellow when hot and white when cold. | (iv) Copper sulphate |
| (e) Violet solid changes to violet vapours. | (v) Red Lead |
Grills of doors and windows are always painted before they are used.
Give an example of a chemical equation in which two reactants form:
two product
