Ответы на вопрос:
ch3
|
h2n-c-cooh + h2n-ch2-cooh + cooh-ch2-ch-cooh >
| | -2h2o
h nh2
ch3
|
--> h2n-c-c=o
| \
h n-ch2-c=o
| \
h n-ch-ch2-cooh
| |
h cooh
M(hcoh)= 300*40%/100% = 120г; m(ch3oh) = p*v=216*0.79=170.64г; сн3он → нсон + н2о; 32г ch3oh hcoh xг ch3oh hcoh x=128г w(ch3oh)=128/170.64*100%=75%
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