(i) In this reaction sodium is combined with oxygen, i.e. gains oxygen and hence oxidized. Consequently oxygen is reduced. (ii) In this reaction Hydrogen gains oxygen and forms water, hence it is oxidised. On the other hand copper loses oxygen and hence, reduced.
(i) In this reaction sodium is combined with oxygen, i.e. gains oxygen and hence oxidized. Consequently oxygen is reduced.
(ii) In this reaction Hydrogen gains oxygen and forms water, hence it is oxidised. On the other hand copper loses oxygen and hence, reduced.
Pb(NO₃)₂ + Ki --> KNO₃ When lead nitrate reacts with potassium iodide, potassium nitrate and lead iodide is formed. In this reaction the both the reactants exchanges their irons after reaction. This type of reaction is known as double displacement reaction.
Pb(NO₃)₂ + Ki –> KNO₃
When lead nitrate reacts with potassium iodide, potassium nitrate and lead iodide is formed. In this reaction the both the reactants exchanges their irons after reaction. This type of reaction is known as double displacement reaction.
The colour of copper sulphate solution is blue. When an iron nail is dipped in the solution of copper sulphate, it forms ferrous sulphate solution and copper metal by the displacement of copper from the solution. The colour of ferrous sulphate is green. That’s why the solution becomes green.
The colour of copper sulphate solution is blue. When an iron nail is dipped in the solution of copper sulphate, it forms ferrous sulphate solution and copper metal by the displacement of copper from the solution.
The colour of ferrous sulphate is green. That’s why the solution becomes green.
(i) The chemical name of substance, which is used for white washing is Calcium oxide. Its common name is lime or quick lime. The chemical formula of Calcium Oxide is CaO. (ii) 𝐶𝑎𝑂+𝐻₂𝑂 → 𝐶𝑎(𝑂𝐻)₂ When calcium oxide reacts with water it forms calcium hydroxide. Calcium hydroxide is also known as slakedRead more
(i) The chemical name of substance, which is used for white washing is Calcium oxide. Its common name is lime or quick lime.
The chemical formula of Calcium Oxide is CaO.
(ii) 𝐶𝑎𝑂+𝐻₂𝑂 → 𝐶𝑎(𝑂𝐻)₂
When calcium oxide reacts with water it forms calcium hydroxide. Calcium hydroxide is also known as slaked lime.
Identify the substances that are oxidised and the substances that are reduced in the following reactions.
(i) In this reaction sodium is combined with oxygen, i.e. gains oxygen and hence oxidized. Consequently oxygen is reduced. (ii) In this reaction Hydrogen gains oxygen and forms water, hence it is oxidised. On the other hand copper loses oxygen and hence, reduced.
(i) In this reaction sodium is combined with oxygen, i.e. gains oxygen and hence oxidized. Consequently oxygen is reduced.
See less(ii) In this reaction Hydrogen gains oxygen and forms water, hence it is oxidised. On the other hand copper loses oxygen and hence, reduced.
Give an example of a double displacement reaction other than the one given in Activity 1.10.
Pb(NO₃)₂ + Ki --> KNO₃ When lead nitrate reacts with potassium iodide, potassium nitrate and lead iodide is formed. In this reaction the both the reactants exchanges their irons after reaction. This type of reaction is known as double displacement reaction.
Pb(NO₃)₂ + Ki –> KNO₃
When lead nitrate reacts with potassium iodide, potassium nitrate and lead iodide is formed. In this reaction the both the reactants exchanges their irons after reaction. This type of reaction is known as double displacement reaction.
See lessWhy does the colour of copper sulphate solution change when an iron nail is dipped in it?
The colour of copper sulphate solution is blue. When an iron nail is dipped in the solution of copper sulphate, it forms ferrous sulphate solution and copper metal by the displacement of copper from the solution. The colour of ferrous sulphate is green. That’s why the solution becomes green.
The colour of copper sulphate solution is blue. When an iron nail is dipped in the solution of copper sulphate, it forms ferrous sulphate solution and copper metal by the displacement of copper from the solution.
See lessThe colour of ferrous sulphate is green. That’s why the solution becomes green.
A solution of a substance ‘X’ is used for whitewashing.
(i) The chemical name of substance, which is used for white washing is Calcium oxide. Its common name is lime or quick lime. The chemical formula of Calcium Oxide is CaO. (ii) 𝐶𝑎𝑂+𝐻₂𝑂 → 𝐶𝑎(𝑂𝐻)₂ When calcium oxide reacts with water it forms calcium hydroxide. Calcium hydroxide is also known as slakedRead more
(i) The chemical name of substance, which is used for white washing is Calcium oxide. Its common name is lime or quick lime.
The chemical formula of Calcium Oxide is CaO.
(ii) 𝐶𝑎𝑂+𝐻₂𝑂 → 𝐶𝑎(𝑂𝐻)₂
When calcium oxide reacts with water it forms calcium hydroxide. Calcium hydroxide is also known as slaked lime.
See lessWrite a balanced chemical equation with state symbols for the following reactions.
(i) BaCl2(aq)+NaSO4→BaSO4(S)+2NaCl(aq) (ii) NaOH(aq)+HCl(aq)→Nacl(aq)+H2O(l)
(i) BaCl2(aq)+NaSO4→BaSO4(S)+2NaCl(aq)
See less(ii) NaOH(aq)+HCl(aq)→Nacl(aq)+H2O(l)