Deck 19 (361 - 380) Flashcards
1
Q
- How many electrons are present in an atom in which the 1s, 2s and 2p subshells are filled?
A
10
2
Q
- When HClO4 ionises in water, ClO4- is the:
a. acid
b. conjugate base
c. conjugate acid
d. base
A
conjugate base
3
Q
- PIC
A
4
Q
- What value of the pH scale is considered to be for neutral liquid?
A
7
5
Q
- PIC
A
6
Q
- PIC
A
7
Q
- According to the Brønsted-Lowry theory, a base is a:
a. proton donor
b. proton
c. proton acceptor
d. proton destroyer
A
proton acceptor
8
Q
- The structure
R - CH2 - O - CH2 - R’ is a general formula of
A
ether
9
Q
- Bases have a pH value that is:
a. less than 7
b. greater than 7
c. equal to 7
d. between 1 and 6
A
greater than 7
10
Q
- PIC
A
11
Q
- An oxidation number of the metal in a molecule of Li2SO4 is:
a. -II
b. I
c. VI
d. II
A
I
12
Q
- A substance that is used to speed up a chemical reaction but is not used as a part of the reaction is called a …
A
catalyst
13
Q
- PIC
A
14
Q
- Proteins are polymers of …
A
amino acids
15
Q
- A substance that increases the concentration of OH- ions in an aqueous solution is known as a(n):
a. Arrhenius acid
b. Arrhenius base
c. Lewis acid
d. Lewis base
A
Arrhenius base
