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BÀI TẬP TRẮC NGHIỆM HÓA HỮU CƠ CẨM NANG DÙNG LUYỆN THI THPTQG CHẤT LƯỢNG CAO (COLOR BOOK)

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3<br />

miligam (mg) KOH<br />

AI =<br />

m KOH (mg)<br />

m (gam)<br />

VD4:<br />

m 5,6 10 56 (mg) n 1 (mmol)<br />

KOH<br />

KOH<br />

n 1 (mmol) m 40 (mg)<br />

NaOH<br />

NaOH<br />

miligam KOH<br />

VD5:<br />

(1) Axit + NaOH Xà phòng + H 2 O (*)<br />

(2)<br />

200 7<br />

n n 25 (mmol) = 0,025 (mol)<br />

NaOH (*) KOH<br />

56<br />

n n 0,025 (mol)<br />

H2O NaOH (*)<br />

Triglixerit + 3NaOH 3Xà phòng + C 3 H 5 (OH) 3 (**)<br />

n NaOH (**) = 3a.<br />

m m m m m m<br />

<br />

axit triglixerit NaOH xµ phßng H2O glixerin<br />

chÊt bÐo<br />

200 0,025 3a 40 207,55 0,025 18 92a<br />

a 0,25 (mol)<br />

NaOH = 0,025 + 3 0,25= 0,775 (mol)<br />

m NaOH = 31 (gam)<br />

6<br />

218

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