Advertisements
Advertisements
Question
Potassium chlorate (KClO3) on heating forms potassium chloride and oxygen. Write a balanced equation for this reaction and indicate the evolution of gas.
Advertisements
Solution
\[\ce{2KClO3_{(s)} ->[\Delta][MnO2] 2KCl_{(s)} + 3O2_{(g)} \uparrow}\]
APPEARS IN
RELATED QUESTIONS
2 mL of sodium hydroxide solution is added to a few pieces of granulated zinc metal taken in a test tube. When the contents are warmed, a gas evolves which is bubbled through a soap solution before testing. Write the equation of the chemical reaction involved and the test to detect the gas. Name the gas which will be evolved when the same metal reacts with dilute solution of a strong acid.
Correct and balance the following equation:
\[\ce{Ca + H2O -> CaOH + H}\]
Write a balanced chemical equation with state symbols for the following reaction:
Sodium hydroxide solution reacts with hydrochloric acid solution to produce sodium chloride solution and water.
Give one example of a chemical reaction characterised by a change in state.
State one characteristic of the chemical reaction which takes place when quicklime is treated with water.
Balance the following chemical equation:
\[\ce{Pb(NO3)2_{(s)} ->[Heat] PbO_{(s)} + NO2_{(g)} + O2_{(g)}}\]
Write your observation for the following chemical reaction and name the product formed :
When an aqueous solution of sodium chloride is mixed with an aqueous solution of silver nitrate.
Balance the following equation. Also name the product formed.
K2O + H2O → KOH
Balance the equation stepwise.
NaOH(aq) + H2SO4(aq) → Na2SO4(aq) + H2O(l)
Write the chemical equation for the following word equation and balance them.
Calcium + Nitrogen → Calcium nitride
Write the chemical equation for the following word equation and balance them.
Magnesium + Sulphuric acid → Magnesium sulphate + Hydrogen
Balance the following equation:
PbO + NH3 → Pb + H2O + N2
Write the balanced chemical equation of the following reaction.
barium chloride + sulphuric acid → barium sulphate + hydrochloric acid
\[\ce{MnO2 + 4HCl -> MnCl2 + 2H2O + Cl2}\]
0.02 moles of pure MnO2 is heated strongly with conc. HCl. Calculate moles of acid required.
Identify the type of reaction taking place of the following case and write the balanced chemical equation of the reaction:
Potassium iodide reacts with lead nitrate to produce potassium nitrate and lead iodide.
Write a balanced equation for the following word equation:
Potassium nitrate → Potassium nitrite + Oxygen
Write a balanced equation for the following word equation:
Lead dioxide [lead (IV) oxide] → Lead monoxide + Oxygen
In the chemical equation the _______ are written on the left-hand side.
What is a chemical equation?
A student took a small amount of copper oxide in a conical flask and added dilute hydrochloric acid to it with constant stirring. He observed a change in colour of the solution.
- Write the name of the compound formed and its colour.
- Write a balanced chemical equation for the reaction involved.
