1.

Accetic acid and aq. NH_3are weak monobasic acid and weak monoacidic base respectivelyand K_a of aceticacid is equal to K_bof aq. NH_3 .Which of the following statement are correct?

Answer» <html><body><p>All proportions of the above mixing would result in an neutral solution having `pH =7 at <a href="https://interviewquestions.tuteehub.com/tag/25-296426" style="font-weight:bold;" target="_blank" title="Click to know more about 25">25</a>^(@) C ` <br/>If aq. `NH_3` is exactlyhalf <a href="https://interviewquestions.tuteehub.com/tag/neutralized-7701079" style="font-weight:bold;" target="_blank" title="Click to know more about NEUTRALIZED">NEUTRALIZED</a> by HCl, then pOH of resulting solution is equal to `pK_a` <br/>If <a href="https://interviewquestions.tuteehub.com/tag/acetic-1967065" style="font-weight:bold;" target="_blank" title="Click to know more about ACETIC">ACETIC</a> acid is exactlyhalf neutralized by NaOH, then pH of resulting solutions is equal to `pK_a` <br/>If acetic acid is exactlyneutralized by aq. `NH_3` then pH of resuling solution is equal `1//<a href="https://interviewquestions.tuteehub.com/tag/2-283658" style="font-weight:bold;" target="_blank" title="Click to know more about 2">2</a>` pkw</p>Solution :on completeneutralization `CH_3 COONH_4 ` isformedand pH ` =((7 +pKa - pKb)/( 2))= 7 (pKu)/(2)` <br/>(b)At <a href="https://interviewquestions.tuteehub.com/tag/half-1014510" style="font-weight:bold;" target="_blank" title="Click to know more about HALF">HALF</a> neutralisation , buffer <br/> ` pOH=pKb + log ""(S)/(B)= pKb`<br/> ( c )At half neutralisationbuffer <br/>` pH =pKa+ log ""(S)/(A)= pKa`</body></html>


Discussion

No Comment Found

Related InterviewSolutions