Question

please explain how the reaction works for my understanding to arrive at the final answer of PH=2.14. thank you.

For next class: Question: what is the final pH when 10 mL of 1M HCl is added to 1L of 0.01M of phosphate buffer at pH 7.2? K-2.14 pK,c)-7.20 2-P-124

Answer 1

Answer :-

Firstly concentration of acid specie and its salt specie is calculated then using the given data, after adding HCl concentration is calculated then the pH is calculated.

The answer is given in the image,

Pka-7-2. totel Moles o M2004 o.oosx o Moles ot HP04- o.oosxtoo 1ooo 80-aļta adding p«^- 2.14 PH- 2.14