30.4 KJ is required to melt one mole of sodium chloride . The entropy change during melting is 28.4JK^(-1) mol^(-1) .Calculate the melting point of sodium chloride .

30.4 KJ is required to melt one mole of sodium chloride . The entropy

1.	30.4 KJ is required to melt one mole of sodium chloride . The entropy change during melting is 28.4JK^(-1) mol^(-1) .Calculate the melting point of sodium chloride .
Answer» <html><body><p></p>Solution :Heat <a href="https://interviewquestions.tuteehub.com/tag/required-1185621" style="font-weight:bold;" target="_blank" title="Click to know more about REQUIRED">REQUIRED</a> for <a href="https://interviewquestions.tuteehub.com/tag/1-256655" style="font-weight:bold;" target="_blank" title="Click to know more about 1">1</a> mole of NaCl for <a href="https://interviewquestions.tuteehub.com/tag/melting-1093090" style="font-weight:bold;" target="_blank" title="Click to know more about MELTING">MELTING</a> (q) =30.4 K J <br/> =30.4 x 1000 J <br/> `<a href="https://interviewquestions.tuteehub.com/tag/deltas-947743" style="font-weight:bold;" target="_blank" title="Click to know more about DELTAS">DELTAS</a>` - entropy change =`28.4 J K^(-1) "mol"^(-1)` <br/> Melting <a href="https://interviewquestions.tuteehub.com/tag/point-1157106" style="font-weight:bold;" target="_blank" title="Click to know more about POINT">POINT</a> =`T_m`=?<br/> `DeltaS=q/T_m "" therefore T_m =q/(DeltaS)` <br/>`therefore T_m =(30.4xx1000)/28.4`=1070.4 K <br/> Melting point of NaCl =1070.4 K</body></html>