Răspuns :
(I)
1g
CH3COOCH3 + H2O --> CH3COOH + HOCH3
74
n1 moli
CH3COOH + NaOH --> CH3COONa + H2O
1
=> m1 = 1x1/74 = 0,0135 moli NaOH
(II)
1g
CH3COCl + H2O --> CH3COOH + HCl
78,5
n2 moli
CH3COOH + NaOH --> CH3COONa + H2O
1
n3 moli
HCl + NaOH --> NaCl + H2O
1
=> n2 = 0,0127 , n3 = 0,0127
=> 0,0254 moli NaOH
(III)
1g
(CH3CO)2O + H2O --> 2CH3COOH
102
n4 moli
CH3COOH + NaOH --> CH3COONa + H2O /x2
2
=> n4 = 1x2/102 = 0,0196 moli NaOH
(IV)
1g
CH3CONH2 + H2O --> CH3COOH + NH3(gaz)
59
n5 moli
CH3COOH + NaOH --> CH3COONa + H2O
1
=> n5 = 1/59 = 0,017 moli NaOH
(V)
1g
CH3CN + 2H2O --> CH3COOH + NH3 gaz
41
n6 moli
CH3COOH + NaOH --> CH3COONa + H2O
1
=> n6 = 1x1/41 = 0,0244 moli NaOH
=> in cazul clorurii de acetil se consuma cel mai mult NaOH
=> B.