Question

Determine the molarity of supplied Na2CO3 solution by titrating against​

Answer 1

Answer:

Here's ur answer home u like it. if correct mark as brainliest

Theory

1. The molarity of hydrochloric acid is determined by titrating it against the standard solution of sodium carbonate using methyl orange as indicator.

2. Strength of the acid is determined by multiplying its molarity with its molecular mass which is 36.5.

Chemical Equation :

quantitative-estimation-volumetric-analysis-24

Indicator. Methyl orange.

End Point. Yellow to pink (Acid in burette).

Procedure

1. Take a burette and wash it with water.

2. Rinse the burette with the given solution of hydrochloric acid and fill it with it.

3. Rinse the pipette with the given sodium carbonate solution and pipette out 20 ml of this solution in a washed titration flask.

4. Add 2-3 drops of methyl orange indicator to the titration flask and place it just below the nozzle of the burette over a white glazed tile.

5. Note down the initial reading of the burette and run the acid solution slowly and

dropwise to the titration flask till the colour of the solution changes from yellow to light pink. .

6. Note the final reading and find the volume of hydrochloric acid used.

7. Repeat the procedure to take a set of at least three concordant readings.

Observations

Molarity of Na2CO3 solution = 0.05 M

Volume of Na2CO3 solution taken in each titration = 20.0 ml.