How can you show with the help of experiment:
1)Sodium chloride solution is a good conductor of electricity,
2)Iron is

2 thoughts on “How can you show with the help of experiment:<br /> 1)Sodium chloride solution is a good conductor of electricity,<br /> 2)Iron is”

1. [tex]\sf \huge\boxed{Answer}[/tex]

   1)Sodium chloride solution is a good conductor of electricity,

   To prove this, we need:-

   • An Jug
   • Brine Solution or salt solution
   • Electrodes
   • Battery

   What we need to do is, insert the electrodes in the Brine solution and then, we will see the electrolysis of NaCl. This will be Na+ and Cl- ions. This shows they are good conductors.

   2)Iron is more reactive than copper.

   Carrying out an experiment with

   • Iron Nail
   • Copper Sulphate

   [tex]\sf Fe+CuSO_4 \rightarrow FeSO_4+Cu[/tex]

   Copper gets displaced and FeSO4 is formed. This shows Iron is reactive than Copper.

   3)Exhaled air contains carbon dioxide.​

   For this, we need:-

   • Lime water
   • A container

   Taking a pichkari, we can fill in the air exhaled by us in Lime water. We will observe formation of white precipicate ie [tex]\sf CaCO_3+H_2O[/tex] which only occurs in presence of Carbon dioxide. Hence, exhaled air contains Carbon Dioxide.

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2. Answer:

   1. What we need to do is, insert the electrodes in the Brine solution and then, we will see the electrolysis of NaCl. This will be Na+ and Cl- ions. This shows they are good conductors.
   2. Take some Iron fillings and dip them in the Copper sulphate solution. After some time you will notice that there is a colour change in the solution which is caused due to the displacement of Copper from it solution. This shows that Iron is more reactive than Copper.
   3. Place a straw inside it. Then take a deep breath and blow gently into the straw. The limewater turns milky. This goes to show that the carbon dioxide present in the exhaled air turns the limewater chalky.

   Step-by-step explanation:

   [tex]thanks[/tex]

   ❤

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