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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
4
C
5
D
3
2) which acid base reaction will yield a neutrtal solution
A
weak acid / strong base
B
strong acid / weak base
C
all of the answers are correct
D
strong acid / strong base
3) soaps and detergents are
A
non polar compounds
B
covalent compounds
C
molelcular compounds
D
ionic compounds
4) the anion in a soap contains
A
sodium or potassium ion
B
water molecule
C
carboxylate group
D
sulfoate group
5) which part of soap dissolves in water?
A
cation
B
all of the answers are correct
C
negatively charged end of hydrocarbon chain
D
sodium or potassium ion
6) which is not true of bleach
A
changes colored substances to colorless
B
kills bacteria
C
disinfects
D
removes substance causing stain
7) bleach should never be mixed with
A
detergent
B
soap
C
water
D
acid
8) which statement is not true about antacids
A
antacids are basic substances
B
they repair bone and cartilage
C
can change pH
D
they neutralize stomach acid
9) when is a detergent more useful for cleaning than soap
A
none of the answers are correct
B
removing grease
C
emulsifying oil droplets
D
cleaning in hard water
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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