Question

give various relations of (p) and (M) in the determination of naoh and na2co3​

Answer 1

Answer:

This type of reaction is called a titration reaction and can be used to determine the concentrations of the components of a solution. In your reaction, your unknown solution was a mixture of Na2CO3 and NaOH. You titrated with HCl. Phenolphthalein and methyl orange were your indicators.

When you added the HCl (in the burette that you used) to your flask containing your mixture, the acid reacted with the bases in solution. It reacted with the strongest base first (-OH from NaOH). This was not detected by either of your indicators.

NaOH + HCl --> NaCl + H2O

The next reaction was between the HCl and the Na2CO3:

Na2CO3 + HCl --> NaHCO3 + NaCl

This reaction involved half neutralization of Na2CO3 and you observed it as the pink color disappeared from the solution in the flask. It occurred as the pH reached 8.3. We will call the volume of HCl added to reach this point V1.

You probably then added a few drops of methyl orange to your flask and continued titrating HCl. The next reaction (around a pH.

Explanation:

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