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PS 9
Test Description: V
Instructions: Answer all questions to get your test result.
1) .00001 M solution of HCl has a pH of
A
2
B
5
C
3
D
4
2) which acid base reaction will yield a neutrtal solution
A
strong acid / weak base
B
weak acid / strong base
C
strong acid / strong base
D
all of the answers are correct
3) soaps and detergents are
A
non polar compounds
B
ionic compounds
C
covalent compounds
D
molelcular compounds
4) the anion in a soap contains
A
water molecule
B
carboxylate group
C
sulfoate group
D
sodium or potassium ion
5) which part of soap dissolves in water?
A
negatively charged end of hydrocarbon chain
B
cation
C
all of the answers are correct
D
sodium or potassium ion
6) which is not true of bleach
A
changes colored substances to colorless
B
removes substance causing stain
C
kills bacteria
D
disinfects
7) bleach should never be mixed with
A
soap
B
detergent
C
water
D
acid
8) which statement is not true about antacids
A
antacids are basic substances
B
can change pH
C
they repair bone and cartilage
D
they neutralize stomach acid
9) when is a detergent more useful for cleaning than soap
A
cleaning in hard water
B
emulsifying oil droplets
C
removing grease
D
none of the answers are correct
10) which statement about bases is incorrect
A
they taste bitter
B
none of the answers are correct
C
they turn litmus paper blue
D
they contain hydronium ions
*select an answer for all questions
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