Part 1 - Making the solutions of the citric acid samples.
Rinse all the apparatus very well before using them in the experiment while performing any step.
To make the samples we need to take the sample and add distilled water to it so that there is decent amount of sample made for performing the experiment. The ratio of distilled water to the sample solution (pure) is 1:1. [Note: there wont be any change in the molarity of the sample as we are just increasing the volume by adding distilled water to it.]
To make the sample solution for Tropicana and Sweet lemon we need to filter it order to get rid of the pulp, which results into interruptions in the experiment.
Make sure that you take the pure sample and then add distilled water to …show more content…
Part 3 - Standardizing 0.1 molarity NaOH solution.
The titrant solution is standardized using Oxalic acid and to perform this part we need to carry out titration.
We need to prepare 0.1 molarity of oxalic acid from Oxalate. For this 9.004 grams of Oxalate is required and dissolved in 1000ml of water. Molecular weight of Oxalic acid = 90.04g
[C=12.01; H=1.01; O=16]
1mole = 90.04g so, 0.1mole = 9.004g Oxalic acid in 1000ml of distilled water.
Reaction for Oxalic acid and Sodium hydroxide:
C_2 H_4 O_4+2NaOH →〖Na〗_2 CO_4+2H_2 O
(The ratio between Oxalic acid and Sodium Hydroxide is in the ratio 1:2)
For carrying out titration take 25ml NaOH in a conical flask using a pipette and fill up the burette with 0.1molar Oxalic acid. Add 4-5 drops of colorless phenolphthalein in the flask containing NaOH. Note the titer value for 5 five trials and take the average titer value into consideration.
Perform titration between Oxalic acid and Sodium
Rinse all the apparatus very well before using them in the experiment while performing any step.
To make the samples we need to take the sample and add distilled water to it so that there is decent amount of sample made for performing the experiment. The ratio of distilled water to the sample solution (pure) is 1:1. [Note: there wont be any change in the molarity of the sample as we are just increasing the volume by adding distilled water to it.]
To make the sample solution for Tropicana and Sweet lemon we need to filter it order to get rid of the pulp, which results into interruptions in the experiment.
Make sure that you take the pure sample and then add distilled water to …show more content…
Part 3 - Standardizing 0.1 molarity NaOH solution.
The titrant solution is standardized using Oxalic acid and to perform this part we need to carry out titration.
We need to prepare 0.1 molarity of oxalic acid from Oxalate. For this 9.004 grams of Oxalate is required and dissolved in 1000ml of water. Molecular weight of Oxalic acid = 90.04g
[C=12.01; H=1.01; O=16]
1mole = 90.04g so, 0.1mole = 9.004g Oxalic acid in 1000ml of distilled water.
Reaction for Oxalic acid and Sodium hydroxide:
C_2 H_4 O_4+2NaOH →〖Na〗_2 CO_4+2H_2 O
(The ratio between Oxalic acid and Sodium Hydroxide is in the ratio 1:2)
For carrying out titration take 25ml NaOH in a conical flask using a pipette and fill up the burette with 0.1molar Oxalic acid. Add 4-5 drops of colorless phenolphthalein in the flask containing NaOH. Note the titer value for 5 five trials and take the average titer value into consideration.
Perform titration between Oxalic acid and Sodium