One litre of buffer solution contains 0.1 mole of acetic acid add 1 mole of sodium acetate. Find its pH if pK_(a) of CH_(3)COOH is 4.8.

One litre of buffer solution contains 0.1 mole of acetic acid add 1 mo

1.	One litre of buffer solution contains 0.1 mole of acetic acid add 1 mole of sodium acetate. Find its pH if pK_(a) of CH_(3)COOH is 4.8.
Answer» <html><body><p></p><a href="https://interviewquestions.tuteehub.com/tag/solution-25781" style="font-weight:bold;" target="_blank" title="Click to know more about SOLUTION">SOLUTION</a> :`pH= pK_a + <a href="https://interviewquestions.tuteehub.com/tag/log-543719" style="font-weight:bold;" target="_blank" title="Click to know more about LOG">LOG</a>"" (["salt"])/(["acid"])` <br/> [ Salt ] =[Acid] =1 <br/> `thereforepH = 4.8= pK_a `<br/>moleof NaOHadded to the solution = 4/40 = 0.1<br/> <img src="https://doubtnut-static.s.llnwi.net/static/physics_images/AKS_ELT_AI_CHE_XI_V01_B_C05_SLV_031_S01.png" width="80%"/> <br/> After <a href="https://interviewquestions.tuteehub.com/tag/adding-2399902" style="font-weight:bold;" target="_blank" title="Click to know more about ADDING">ADDING</a> 0.1 mole of <a href="https://interviewquestions.tuteehub.com/tag/caustic-7374706" style="font-weight:bold;" target="_blank" title="Click to know more about CAUSTIC">CAUSTIC</a> <a href="https://interviewquestions.tuteehub.com/tag/soda-1215481" style="font-weight:bold;" target="_blank" title="Click to know more about SODA">SODA</a> to the buffer solution<br/> `pH = 4.8 + log""(1.1)/( 0.9 ) = 4.8 + log 1.222 = 4.886`</body></html>