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

How can you show with the help of experiment:
1)Sodium chloride solution is a good conductor of electricity,
2)Iron is more reactive than copper.
3)Exhaled air contains carbon dioxide.​

### 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. $$\sf \huge\boxed{Answer}$$

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

$$\sf Fe+CuSO_4 \rightarrow FeSO_4+Cu$$

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 $$\sf CaCO_3+H_2O$$ which only occurs in presence of Carbon dioxide. Hence, exhaled air contains Carbon Dioxide.

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