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Boric acid B(OH)_(3)is weak monobasic acid reacts with alkali to form borates. The most common borate of boric acid is borax represented as Na_(2)(B_(4)O_5(OH)_4.8H_2Owhich is made up of two tetrahedral and two triangular units. On dissolution in water, these tetrahedral and triangular units are seperated. Borax is useful primary standard for titra tion against acids The number of B - O - B linkage in borax is/are

Answer» <html><body><p>All proportions of the above mixing would result in an neutral solution having `<a href="https://interviewquestions.tuteehub.com/tag/ph-1145128" style="font-weight:bold;" target="_blank" title="Click to know more about PH">PH</a> =7 at 25^(@) C ` <br/>If aq. `NH_3` is exactlyhalf neutralized by HCl, then <a href="https://interviewquestions.tuteehub.com/tag/poh-1145204" style="font-weight:bold;" target="_blank" title="Click to know more about POH">POH</a> of resulting solution is equal to `pK_a` <br/>If acetic 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//2` pkw</p>Solution :on <a href="https://interviewquestions.tuteehub.com/tag/completeneutralization-2532979" style="font-weight:bold;" target="_blank" title="Click to know more about COMPLETENEUTRALIZATION">COMPLETENEUTRALIZATION</a> `CH_3 COONH_4 ` isformedand pH ` =((7 +pKa - pKb)/( 2))= 7 (pKu)/(2)` <br/>(<a href="https://interviewquestions.tuteehub.com/tag/b-387190" style="font-weight:bold;" target="_blank" title="Click to know more about B">B</a>)At half neutralisation , buffer <br/> ` pOH=pKb + log ""(S)/(B)= pKb`<br/> ( c )At half neutralisationbuffer <br/>` pH =pKa+ log ""(S)/(A)= pKa`</body></html>


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