<table width="100%" style="font-family:Verdana, '굴림';table-layout:fixed;"><tbody><tr><td style="font-size:9pt;line-height:21.600000381469727px;"> <div style="float:right;padding:10px 0px 2px 10px;"> <table><tbody><tr><td style="font-size:9pt;line-height:16.799999237060547px;"> <table border="0" cellspacing="0" cellpadding="0" width="210"><tbody><tr><td height="11" colspan="2" style="font-size:9pt;line-height:16.799999237060547px;padding-left:5px;"><br></td></tr><tr><td colspan="2" style="font-size:9pt;line-height:16.799999237060547px;padding-left:5px;padding-right:5px;"><br></td></tr></tbody></table></td></tr></tbody></table></div><span style="font-family:'돋움', Dotum, AppleGothic, sans-serif;line-height:18px;">아세트산의 PH값을 구할때</span><br style="font-family:'돋움', Dotum, AppleGothic, sans-serif;line-height:18px;"><br style="font-family:'돋움', Dotum, AppleGothic, sans-serif;line-height:18px;"><span style="font-family:'돋움', Dotum, AppleGothic, sans-serif;line-height:18px;">35ml 의 원액을 1l 물에 섞었을때 이때 c를 계산하면 </span><br style="font-family:'돋움', Dotum, AppleGothic, sans-serif;line-height:18px;"><br style="font-family:'돋움', Dotum, AppleGothic, sans-serif;line-height:18px;">아세트산 밀도는 1.044g/ml, 분자량은 60.05g/mol<br><br style="font-family:'돋움', Dotum, AppleGothic, sans-serif;line-height:18px;"><span style="font-family:'돋움', Dotum, AppleGothic, sans-serif;line-height:18px;">c= n/V , n= m/M 이 식에 의해서 <br><br></span>m = 35ml * 1.044g/ml = 36.54 g/ml M= 60.05g/mol <br style="font-family:'돋움', Dotum, AppleGothic, sans-serif;line-height:18px;"><br style="font-family:'돋움', Dotum, AppleGothic, sans-serif;line-height:18px;"><span style="font-family:'돋움', Dotum, AppleGothic, sans-serif;line-height:18px;">n= 36.54/ 60.05 = 0.6085mol 이거를 c = 0.6085/ 1 = 0.6085 <br></span>V는 1l 라서 1로 했고 <br style="font-family:'돋움', Dotum, AppleGothic, sans-serif;line-height:18px;"><br style="font-family:'돋움', Dotum, AppleGothic, sans-serif;line-height:18px;"><span style="font-family:'돋움', Dotum, AppleGothic, sans-serif;line-height:18px;">아세트산은 약산이니 PH값을 구할때 Pks는 = 4.65라고 할때 </span><br style="font-family:'돋움', Dotum, AppleGothic, sans-serif;line-height:18px;"><br style="font-family:'돋움', Dotum, AppleGothic, sans-serif;line-height:18px;"><span style="font-family:'돋움', Dotum, AppleGothic, sans-serif;line-height:18px;">PH= 1/2( Pks - log[c]) , 1/2(4.65-log[0.6085]) = 2.43 </span><br style="font-family:'돋움', Dotum, AppleGothic, sans-serif;line-height:18px;"><br>이렇게 나왔는데... <br style="font-family:'돋움', Dotum, AppleGothic, sans-serif;line-height:18px;"><br><span style="font-family:'돋움', Dotum, AppleGothic, sans-serif;line-height:18px;">제가 헤매고 있어서 답변해 주시면 정말 감사하겠습니다..<br></span></td></tr></tbody></table>
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