3H2 +N2 → 2NH3
Combination reaction
H2 + Cl2 → 2HCl
Combination reaction
When hydrogen sulphide gas is passed through a blue solution of copper sulphate, a black precipitate of copper sulphide is obtained and the sulphuric acid so formed remains in the solution. The reaction is an example of a
Double displacement reaction.CuSO4 + H2S → CuS + H2SO4 (CBSE BOARD PAPER 2020)
Fe2O3 + 2Al → Al2O3 + 2Fe
Displacement reaction
Na(s)+S(s)Fuse−−→Na2S(s)
Combination reaction
Zinc reacts with silver nitrate to produce zinc nitrate and silver.Write the balanced equation. Also identify the reaction type.
displacement reaction.
Mg(s)+Cl2(g)→MgCl2(s)
Combination reaction
Chlorine gas is passed in an aqueous potassium iodide solution to form potassium chloride solution and solid iodine. Identify the type of reaction:
Displacement reaction
TiCl4(l)+Mg(s)→Ti(s)+MgCl2(s)
Displacement reaction
Pb + CuCl2 → PbCl2 + Cu
Displacement reaction
What is observed when a solution of potassium iodide solution is added to a solution of lead nitrate? Name the type of reaction. Write a balanced chemical equation to represent the above chemical reaction.
Pb( NO3)2 (aq) + 2KI (aq) —-> Pbl2 (s) + 2KNO3 (aq) Double displacement reaction.
HgO(s)Heat−−→Hg(l)+O2(g)
Decomposition reaction
ZnCO3 → ZnO + CO2
Decomposition reaction
Write one equation for decomposition reactions where energy is supplied in the form of either heat,electricity and light.(only one)
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CaO(s)+SiO2(s)→CaSiO3(s)
Combination reaction
H2O2(l)UV−−→H2O(l)+O2(g)
Decomposition reaction