Advertisements
Advertisements
प्रश्न
Potassium chlorate (KClO3) on heating forms potassium chloride and oxygen. Write a balanced equation for this reaction and indicate the evolution of gas.
Advertisements
उत्तर
\[\ce{2KClO3_{(s)} ->[\Delta][MnO2] 2KCl_{(s)} + 3O2_{(g)} \uparrow}\]
APPEARS IN
संबंधित प्रश्न
Write symbolic representation for the following word equation and balance them :
Calcium carbonate → Calcium oxide + Carbon dioxide.
In electrolysis of water, why is the volume of gas collected over one electrode double that of gas collected over the other electrode?
What is a chemical equation? Why it is necessary to balance it?
What is the limitation of the reaction given in question 2?
Write the chemical equation for the following word equation and balance them.
Sodium reacts with water to form sodium hydroxide and hydrogen
Balance the following equation:
C + H2SO4 → CO2 + H2O + SO2
Balance the following equation:
NaHCO3 → Na2CO3 + H2O + CO2
What is the valency of :
carbon in CH4
Why should an equation be balanced? Explain with the help of a simple equation.
Write the balanced chemical equation of the following reaction.
barium chloride + sulphuric acid → barium sulphate + hydrochloric acid
Answer the following question.
What is observed when 2 mL of dilute hydrochloric acid is added to 1 g of sodium carbonate taken in a clean and dry test tube? Write a chemical equation for the reaction involved.
In certain reaction a change of state is observed i.e. solid to liquid, liquid to gas etc. – State the change of state of the products – to give the respective reactant.
NH3 + HCl ⇌ NH4Cl
In certain reaction a change of state is observed i.e. solid to liquid, liquid to gas etc. – State the change of state of the products – to give the respective reactant.
\[\ce{2H2O ->[electric][current] 2H2 + O2}\]
Write word equation for the following chemical reaction given below. Also state the observation seen in the case.
\[\ce{ZnCo3->[\triangle] ZnO + CO2}\]
Balance the following simple equation:
K + H2O → KOH + H2
Give a balanced equation by partial equation method, [steps are given below].
The reaction of excess ammonia with chlorine – Ammonia as a reducing agent
- Ammonia first reacts with chlorine to give hydrogen chloride and nitrogen.
- Hydrogen chloride then further reacts with excess ammonia to give ammonium chloride.
Underline the compound in the equation given below, it is incorrectly balanced and write the correct balancing for the same.
2H2O + 2Cl2 → 2HCl + O2
What are reactants? Explain with the help of example.
The following reaction is an example of a `4"NH"_3("g") + "SO"_2 -> 4"NO"("g") + 6"H"_2"O"("g")`
- displacement reaction
- combination reaction
- redox reaction
- neutralisation reaction
When aqueous solutions of potassium iodide and lead nitrate are mixed an insoluble substance separates out. The chemical equation for the reaction involved is:
