1. All are examples of Lewis acid-base reactions except (A) Cu²+ (aq) + 4NH3(aq) [Cu(NH3)4]²+ (aq) (B) HCl(g) + NH3(g) → NH4Cl(s) (C) H+ (aq) + OH (aq) → H₂O(1) (D) 2Na(s) + Cl₂(g) → 2NaCl(s) 2. According to the Lewis definition, an acid is a species (A) having a hydrogen ion. (B) (C) accepting a pair of electrons. (D) 3. All are potential Lewis bases except donating a pair of electrons. accepting a hydrogen ion. (A) NH, (B) H₂O (C) CH4 (D) CN-
1. All are examples of Lewis acid-base reactions except (A) Cu²+ (aq) + 4NH3(aq) [Cu(NH3)4]²+ (aq) (B) HCl(g) + NH3(g) → NH4Cl(s) (C) H+ (aq) + OH (aq) → H₂O(1) (D) 2Na(s) + Cl₂(g) → 2NaCl(s) 2. According to the Lewis definition, an acid is a species (A) having a hydrogen ion. (B) (C) accepting a pair of electrons. (D) 3. All are potential Lewis bases except donating a pair of electrons. accepting a hydrogen ion. (A) NH, (B) H₂O (C) CH4 (D) CN-
Chemistry
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Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Hello, I need help with questions 1-10 multiple choice, and for each question could you explain which one is right and why?
![Acids & Bases:
1. All are examples of Lewis acid-base reactions except
(A)
Cu²+ (aq) + 4NH3(aq) [Cu(NH3)4]²+ (aq)
(B)
HCl(g) + NH3(g) → NH4Cl(s)
(C)
H+ (aq) + OH (aq) → H₂O(1)
(D)
2Na(s) + Cl₂(g) → 2NaCl(s)
2. According to the Lewis definition, an acid is a species
having a hydrogen ion.
(A)
(B)
(C)
accepting a pair of electrons. (D)
3. All are potential Lewis bases except
(A) NH, (B) H₂O (C) CH4
(D) CN-
4. Which hydrated metal ion is most acidic under conditions of equal molar concentration in water?
(A) A13+ (B) Ba2+ (C) K+ (D) Zn²+ (E)
Ag+
5. Which element in Group 5A forms the most basic oxide?
(A) N (B) P
Atomic Structure:
6. In what respect does an atom of magnesium differ from a magnesium ion (Mg2+)?
(A)The ion has a more stable electronic arrangement than the atom.
(B)The positive charge on the nucleus of the ion is two units greater than the nuclear charge on the atom.
(C)The ion has two more protons than the atom.
(D)The ion will react more readily with free Cl₂.
(E)The ion has two more planetary electrons than the atom.
It has 221 protons in the nucleus.
Its atomic mass is 73 u.
7. A certain atom has the symbol 73 Px. What does this symbol tell about an atom of the element?
It has 148 electrons.
(A)
(B) It has a valence of 4.
(C)
(E)
Atom A
M = 24,Z = 12
8. 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
(A) 16 (B) 31 (C) 32 (D) 48
10. The nucleus of which atom contains seven neutrons?
Atom B
M = 15,Z = 7
9. 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
(A) 1-
(B) 2-
(C) 3+ (D) 1+
Atom C
M = 17,Z = 10
Atom D
M = 7, Z=3
Atom E
M = 34,Z = 17
(A) A
n=1
2e
n = 1
2e
n=1
2e
(C) As (D) Sb (E) Bi
n=1
2e
(B)
n = 1
2e
B
n = 2
8e
n = 2
5e
n = 2
8e
n = 2
1e
n = 2
8e
accepting a hydrogen ion.
(C)
donating a pair of electrons.
n = 3
2e
n = 3
n = 3
n = 3
n = 3
7e
C
(D) It has 75 neutrons in the nucleus.
(D)
Ꭰ
(E)
E](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fdb95e059-8064-4379-9fc8-59ee0fd6d74c%2F0b89381d-9f99-4476-8d99-95e42cf15f08%2Ft78vwq_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Acids & Bases:
1. All are examples of Lewis acid-base reactions except
(A)
Cu²+ (aq) + 4NH3(aq) [Cu(NH3)4]²+ (aq)
(B)
HCl(g) + NH3(g) → NH4Cl(s)
(C)
H+ (aq) + OH (aq) → H₂O(1)
(D)
2Na(s) + Cl₂(g) → 2NaCl(s)
2. According to the Lewis definition, an acid is a species
having a hydrogen ion.
(A)
(B)
(C)
accepting a pair of electrons. (D)
3. All are potential Lewis bases except
(A) NH, (B) H₂O (C) CH4
(D) CN-
4. Which hydrated metal ion is most acidic under conditions of equal molar concentration in water?
(A) A13+ (B) Ba2+ (C) K+ (D) Zn²+ (E)
Ag+
5. Which element in Group 5A forms the most basic oxide?
(A) N (B) P
Atomic Structure:
6. In what respect does an atom of magnesium differ from a magnesium ion (Mg2+)?
(A)The ion has a more stable electronic arrangement than the atom.
(B)The positive charge on the nucleus of the ion is two units greater than the nuclear charge on the atom.
(C)The ion has two more protons than the atom.
(D)The ion will react more readily with free Cl₂.
(E)The ion has two more planetary electrons than the atom.
It has 221 protons in the nucleus.
Its atomic mass is 73 u.
7. A certain atom has the symbol 73 Px. What does this symbol tell about an atom of the element?
It has 148 electrons.
(A)
(B) It has a valence of 4.
(C)
(E)
Atom A
M = 24,Z = 12
8. 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
(A) 16 (B) 31 (C) 32 (D) 48
10. The nucleus of which atom contains seven neutrons?
Atom B
M = 15,Z = 7
9. 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
(A) 1-
(B) 2-
(C) 3+ (D) 1+
Atom C
M = 17,Z = 10
Atom D
M = 7, Z=3
Atom E
M = 34,Z = 17
(A) A
n=1
2e
n = 1
2e
n=1
2e
(C) As (D) Sb (E) Bi
n=1
2e
(B)
n = 1
2e
B
n = 2
8e
n = 2
5e
n = 2
8e
n = 2
1e
n = 2
8e
accepting a hydrogen ion.
(C)
donating a pair of electrons.
n = 3
2e
n = 3
n = 3
n = 3
n = 3
7e
C
(D) It has 75 neutrons in the nucleus.
(D)
Ꭰ
(E)
E
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