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Unit 3: Physical Science Exam Review
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If pOH= 7, what is the pH? Is it acidic or basic?
pH= 7, Neutral
If pOH= 6, what is the pH? Is it acidic or basic?
pH= 8, Basic
If pOH= 4, what is the pH? Is it acidic or basic?
pH= 10, Acidic
If pH= 10, what is the pOH? Is it acidic or basic?
pOH= 4, Basic
If pH= 7, what is the pOH? Is it acidic or basic?
pOH= 7, Neutral
If pH=2, what is the pOH? Is it acidic or basic?
pOH= 12, acidic
What is the pH range for neutral solutions?
pH= 7
What is the pH range for basic solutions?
pH > 7
What is the pH range for acidic solutions?
pH < 7
Water is known as amphoteric, which means it can act as an acid or a base. How does this work?
H2O + Acid: H2O= Base, H2O + Base: H2O=Acid
If you have red litmus paper in the presence of a base, it turns what color?
BLUE
If you have blue litmus paper in the presence of an acid, it turns what color?
RED
Which of the following are bases? grapes, milk, eggs, water, bleach, soap, ammonia
water, bleach, soap, ammonia
Which of the following are acids? lemon, lime, milk, eggs, water, stomach acid
lemon, lime, water, stomach acid
Complete the net ionic equation: KOH ---->
KOH ----> K+ (aq) + OH- (aq)
Complete the net ionic equation: NaOH ---->
NaOH ----> Na+ (aq) + OH- (aq)
Complete the net ionic equation: HCl ---->
HCl ----> H+ (aq) + Cl- (aq)
What kind of acid/base dissociates completely? (strong or weak?)
STRONG
Label the acid and base for the reaction: NaHCO3 + HCl ----> NaCl + H2CO3
NaHCO3= Base, HCl= Acid
Label the acid and base for the reaction: HC2H3O2 + H2O ----> H3O+ + C2H3O2-
HC2H3O2= Acid, H2O= Base
Label the acid and base for the reaction: H2SO4 + NH3 ----> HSO4- + NH4+
H2SO4= Acid, NH3= Base
Calculate the pH of a 1x10-2 M solution of HF.
pH=2, Acidic
Calculate the pH of a 1x10-9 M solution of NaOH.
pH=9, Basic
Calculate the pH of a 1x10-3 M solution of HCl. Acidic or Basic?
pH= 3, Acidic
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