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General Chemistry ACS exam set 4 Exam 2024/2025 Questions With Completed & Verified Solutions.
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General Chemistry ACS exam set 4 Exam 2024/2025 Questions With Completed & Verified Solutions.
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General Chemistry ACS exam set 4The limiting reagent for a given reaction can be recognized because it is the reagent that
a) Has the smallest coefficient in the balanced equation for the reaction
b) has the smallest mass in the reaction mixture
c) is present in the smallest molar quantity
d) would be used up first - ANS D
What are the coefficients for each substance(respectively) in the chemical reaction when
balanced?
____C_7 H_14 O_2 + ___O_2 ---> ____CO_2+ _____H_2O
a) 2,21,14,14
b) 2,19,14,14
c) 2,19,7,7
d) 1,10,7,7 - ANS b
What are the smallest whole number coefficients for each substance(respectively) in the
chemical reaction when balanced?
___NaBR+ ____Cl_2 --->_____NaCl+_____Br_2
a) 1,1,2,2
b) 1,2,2,2
c) 2,1,2,1
d) 2,4,2,4 - ANS c
When this equation is balanced with the smallest set of whole numbers, what is the coefficient
for N_2?
___N_2H_4(g)+ _____N_2 O_4(g) ---->N_2(g)+ ____H_2O(g)
a) 1
b) 2
c) 3
d) 4 - ANS c
What is the coefficient for ZnO when the reaction is balanced with the smallest whole number
coefficient?
___ZnS+____O_2--->ZnO+___SO_2
a) 1
b) 2
c) 3
d) 4 - ANS b
What are the smallest whole number coefficients for each substance(respectively) in the
chemical reaction when balanced?
, ___CH_4+ ____O_2--->____CO_2+___H_2O
a) 1,2,1,2
b) 1,3,1,2
c) 2,4,2,4
d) 4,2,2,2 - ANS a
How many moles of iron are necessary to react completly with 1.75 mol of oxygen gas?
3O_2(g)+ 4Fe(s) --->2FeO_3(s)
a) 1.31 mol
b) 1.75 mol
c) 2.33 mol
d) 5.25 mol - ANS c
What mass of NO_2 is formed by the complete reaction of 2 mol O_3 with excess NO?
Molar Mass/g.mol
O_3 48.0
NO_3 46.0
O_3+NO--->O_2+NO_2
a) 23.0g
b) 46.0 g
c) 92.0 g
d) 96.0 g - ANS c
How many moles of Ba_3N_2 are necessary to react completely with 1.5 mol of water?
Ba_3N_2+ 6H_2O--->3Ba(OH)_2+2NH_3
a) 0.25 mol
b) 1 mol
c) 6 mol
d) 9 mol - ANS a
How many moles of water are necessary to react completely with 8.0 mol PCl_5?
PCl_5+ 4H_2O--->H_3PO_4+5HCl
a) 2.0 mol
b) 8.0 mol
c) 16 mol
d) 32 mol - ANS d
What mass of SbF_3(179 g.mol^-1) is needed to produce 1.00 g of Freon-12, CCl_2F_2(molar
mass=121 g.mol^-1)?
3CCl_4+2SbF_3---> 3CCl_2F_2+2SbCl_3
a) 0.667 g
b) 0.986 g
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