Question

How to prepare 20% sodium carbonate solution?

Answer 1

Answer:20g in 100 ml of water

Explanation:

Generally % is calculated for 100. So if u wanna prepare 10% then weigh exactly 10g and dissolve in 100 ml of water. This is called as weight by volume ratio

Answer 2

Steps to prepare 20% sodium carbonate solution:

1. The solution is composed of 2 parts namely solute and solvent.
2. In the given case solute is 20% sodium carbonate. As solution has to be made, it must be dissolved in water. Thus water is the solvent.
3. As per volume by volume percentage (v\v), 20% means 20mL of sodium carbonate solution
4. In order to make 100mL of solution, add 20mL of sodium carbonate solution to 80mL of water taken in standard measuring cylinder.
5. When this is mixed, it leads to 20% sodium carbonate solution. In this way 20% sodium carbonate solution is prepared.

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