ACS General Chemistry Exam 77 Questions And Answers
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Terms in this set
77
Which is the strongest oxidizing agent?
N a →← N a + + e - 2 . 7 1 V
Cd →← Cd2+ + 2e- 0.40 V
H2 →← 2H+ +2e- 0.00V
Ag→← Ag++e- -0.80V
(A) Na+
(B)H2
(C) Cd0
(D)Ag+
N a →← N a + + e - 2 . 7 1 V
Cd →← Cd2+ + 2e- 0.40 V
H2 →← 2H+ +2e- 0.00V
Ag→← Ag++e- -0.80V
(A) Na+
(B)H2
(C) Cd0
(D)Ag+
Ag+
All are examples of Lewis acid-base reactions except
Cu2+(aq) + 4NH3(aq) →← [Cu(NH3)4]2+(aq)
HCl(g) + NH3(g) → NH4Cl(s)
H+(aq) + OH-(aq) →← H2O(l)
2Na(s) + Cl2(g) → 2NaCl(s)
Cu2+(aq) + 4NH3(aq) →← [Cu(NH3)4]2+(aq)
HCl(g) + NH3(g) → NH4Cl(s)
H+(aq) + OH-(aq) →← H2O(l)
2Na(s) + Cl2(g) → 2NaCl(s)
2Na + Cl2 -> 2NaCl(s)
According to the Lewis definition, an acid is a species
accepting a pair of electrons
All are potential Lewis bases except
NH3
H2O
CH4
CN-
NH3
H2O
CH4
CN-
CH4
Which hydrated metal ion is most acidic under conditions of equal molar concentration in water?
Al3+
Which element in Group 5A forms the most basic oxide?
Bi
In what respect does an atom of magnesium differ from a magnesium ion (Mg^2+)
The ion has more stable electronic arrangement than the atom
A certain atom has the symbol 148/73Px. What does the symbol tell about an atom of the element?
It has 75 neutrons in the nucleus
The atomic mass of an element is 32.07 u and its atomic number is 16. The number of protons contained in the nucleus of an atom of this element is
16
The atomic mass of an element is 32.07 u and its atomic number is 16. The element forms a simple ion. The ion will most likely have a charge of
2-