4 . CH 3 CO 2 Na + HClO 4 → CH 3 CO 2 H + NaClO 4
The above reaction is classified as a(A) double displacement reaction
(B) synthesis reaction
(C) decomposition reaction
(D) single displacement and decomposition reaction
(E) synthesis and decomposition reaction5 . Aspirin (C 9 H 8 O 4 ) is prepared by reacting salicylic acid (C 7 H 6 O 3 ) and acetic anhydride
(C 4 H 6 O 3 ):
C 7 H 6 O 3 + C 4 H 6 O 3 → C 9 H 8 O 4 + C 2 H 4 O 2
How many moles of salicylic acid should be used to prepare six 5-grain aspirin tablets? (1 g
= 15.5 grains)(A) 0.01
(B) 0.1
(C) 1.0
(D) 2.0
(E) 31.06 . The percent composition of an unknown element X in CH 3 X is 32%. Which of the following
is element X?
(A) H
(B) F
(C) Cl
(D) Na
(E) Li