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Yesterday’s Homework
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Yesterday’s Homework
1. Write a balanced formula equation for the reaction that occurs between each of the following pairs of reactants.
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Yesterday’s Homework
magnesium and nitric acid
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Yesterday’s Homework
magnesium and nitric acid
Mg + HNO3 →
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Yesterday’s Homework
magnesium and nitric acid
Mg + HNO3 →
Mg(NO3)2 + H2
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Yesterday’s Homework
magnesium and nitric acid
Mg + 2HNO3 →
Mg(NO3)2 + H2
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Yesterday’s Homework
aluminum and sulfuric acid
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Yesterday’s Homework
aluminum and sulfuric acid
Al + H2SO4 →
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Yesterday’s Homework
aluminum and sulfuric acid
Al + H2SO4 →
Al2(SO4)3 + H2
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Yesterday’s Homework
aluminum and sulfuric acid
2Al + 3H2SO4 →
Al2(SO4)3 + 3H2
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Yesterday’s Homework
calcium carbonate and hydrobromic acid
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Yesterday’s Homework
calcium carbonate and hydrobromic acid
CaCO3 + HBr →
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Yesterday’s Homework
calcium carbonate and hydrobromic acid
CaCO3 + HBr →
CaBr2 + H2O + CO2
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Yesterday’s Homework
calcium carbonate and hydrobromic acid
CaCO3 + 2HBr →
CaBr2 + H2O + CO2
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Yesterday’s Homeworkpotassium hydrogen carbonate
and hydrochloric acid
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Yesterday’s Homeworkpotassium hydrogen carbonate
and hydrochloric acid
KHCO3 + HCl →
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Yesterday’s Homeworkpotassium hydrogen carbonate
and hydrochloric acid
KHCO3 + HCl →
KCl + H2O + CO2
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Yesterday’s Homework
2. Identify the conjugate acid-base pairs in the following reactions.
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Yesterday’s Homework
NH4 + OH- ↔
NH3 + H2O
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Yesterday’s Homework
NH4 + OH- ↔
NH3 + H2O
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Yesterday’s Homework
HBr + H2O ↔
H3O+ + Br-
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Yesterday’s Homework
HBr + H2O ↔
H3O+ + Br-
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Yesterday’s Homework
CO32- + H2O ↔
HCO3- + OH-
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Yesterday’s Homework
CO32- + H2O ↔
HCO3- + OH-
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Yesterday’s Homework
HSO4- + H2O ↔
H3O+ + SO42-
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Yesterday’s Homework
HSO4- + H2O ↔
H3O+ + SO42-
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Daily Quiz 5991. When zinc reacts with hydrochloric
acid, one of the products will be:
a. Znb. HClc. H2Znd. ZnCl2
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Daily Quiz 5992. Identify the acid:
HBr + H2O → H3O+ + Br-
a. HBrb. H2Oc. H3O+
d. Br-
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Daily Quiz 5993. Identify the acid:
NH3 + H2O → NH4+ + OH-
a. NH3
b. H2Oc. NH4
+ d. OH-
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Daily Quiz 5994. Identify the conjugate base:
H2SO4 → 2H+ + SO42-
a. H2SO4
b. H2Oc. H+ d. SO4
2-
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Daily Quiz 5991. When zinc reacts with hydrochloric
acid, one of the products will be:
a. Znb. HClc. H2Znd. ZnCl2
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Daily Quiz 5991. When zinc reacts with hydrochloric
acid, one of the products will be:
a. Znb. HClc. H2Znd. ZnCl2
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Daily Quiz 5992. Identify the acid:
HBr + H2O → H3O+ + Br-
a. HBrb. H2Oc. H3O+
d. Br-
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Daily Quiz 5992. Identify the acid:
HBr + H2O → H3O+ + Br-
a. HBrb. H2Oc. H3O+
d. Br-
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Daily Quiz 5993. Identify the acid:
NH3 + H2O → NH4+ + OH-
a. NH3
b. H2Oc. NH4
+ d. OH-
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Daily Quiz 5993. Identify the acid:
NH3 + H2O → NH4+ + OH-
a. NH3
b. H2Oc. NH4
+ d. OH-
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Daily Quiz 5994. Identify the conjugate base:
H2SO4 → 2H+ + SO42-
a. H2SO4
b. H2Oc. H+ d. SO4
2-
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Daily Quiz 5994. Identify the conjugate base:
H2SO4 → 2H+ + SO42-
a. H2SO4
b. H2Oc. H+ d. SO4
2-
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Why do molecules lose hydrogen ions?
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Why do molecules lose hydrogen ions?
Because water is polar.
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Hydrogen ions will dissociate (come off) only if they are attached
with polar bonds.
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Ethanoic acid
H O H-C-C H O-H
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Homework• Read pages 600-601.
• Do the Section 19.1 Assessment questions 4-9