Yesterday’s Homework

Yesterday’s Homework

1. Write a balanced formula equation for the reaction that occurs between each of the following pairs of reactants.

Yesterday’s Homework

magnesium and nitric acid

Yesterday’s Homework

magnesium and nitric acid

Mg + HNO3 →

Yesterday’s Homework

magnesium and nitric acid

Mg + HNO3 →

Mg(NO3)2 + H2

Yesterday’s Homework

magnesium and nitric acid

Mg + 2HNO3 →

Mg(NO3)2 + H2

Yesterday’s Homework

aluminum and sulfuric acid

Yesterday’s Homework

aluminum and sulfuric acid

Al + H2SO4 →

Yesterday’s Homework

aluminum and sulfuric acid

Al + H2SO4 →

Al2(SO4)3 + H2

Yesterday’s Homework

aluminum and sulfuric acid

2Al + 3H2SO4 →

Al2(SO4)3 + 3H2

Yesterday’s Homework

calcium carbonate and hydrobromic acid

Yesterday’s Homework

calcium carbonate and hydrobromic acid

CaCO3 + HBr →

Yesterday’s Homework

calcium carbonate and hydrobromic acid

CaCO3 + HBr →

CaBr2 + H2O + CO2

Yesterday’s Homework

calcium carbonate and hydrobromic acid

CaCO3 + 2HBr →

CaBr2 + H2O + CO2

Yesterday’s Homeworkpotassium hydrogen carbonate

and hydrochloric acid

Yesterday’s Homeworkpotassium hydrogen carbonate

and hydrochloric acid

KHCO3 + HCl →

Yesterday’s Homeworkpotassium hydrogen carbonate

and hydrochloric acid

KHCO3 + HCl →

KCl + H2O + CO2

Yesterday’s Homework

2. Identify the conjugate acid-base pairs in the following reactions.

Yesterday’s Homework

NH4 + OH- ↔

NH3 + H2O

Yesterday’s Homework

NH4 + OH- ↔

NH3 + H2O

Yesterday’s Homework

HBr + H2O ↔

H3O+ + Br-

Yesterday’s Homework

HBr + H2O ↔

H3O+ + Br-

Yesterday’s Homework

CO32- + H2O ↔

HCO3- + OH-

Yesterday’s Homework

CO32- + H2O ↔

HCO3- + OH-

Yesterday’s Homework

HSO4- + H2O ↔

H3O+ + SO42-

Yesterday’s Homework

HSO4- + H2O ↔

H3O+ + SO42-

Daily Quiz 599

Daily Quiz 5991. When zinc reacts with hydrochloric

acid, one of the products will be:

a. Znb. HClc. H2Znd. ZnCl2

Daily Quiz 5992. Identify the acid:

HBr + H2O → H3O+ + Br-

a. HBrb. H2Oc. H3O+

d. Br-

Daily Quiz 5993. Identify the acid:

NH3 + H2O → NH4+ + OH-

a. NH3

b. H2Oc. NH4

+ d. OH-

Daily Quiz 5994. Identify the conjugate base:

H2SO4 → 2H+ + SO42-

a. H2SO4

b. H2Oc. H+ d. SO4

2-

Daily Quiz 5991. When zinc reacts with hydrochloric

acid, one of the products will be:

a. Znb. HClc. H2Znd. ZnCl2

Daily Quiz 5991. When zinc reacts with hydrochloric

acid, one of the products will be:

a. Znb. HClc. H2Znd. ZnCl2

Daily Quiz 5992. Identify the acid:

HBr + H2O → H3O+ + Br-

a. HBrb. H2Oc. H3O+

d. Br-

Daily Quiz 5992. Identify the acid:

HBr + H2O → H3O+ + Br-

a. HBrb. H2Oc. H3O+

d. Br-

Daily Quiz 5993. Identify the acid:

NH3 + H2O → NH4+ + OH-

a. NH3

b. H2Oc. NH4

+ d. OH-

Daily Quiz 5993. Identify the acid:

NH3 + H2O → NH4+ + OH-

a. NH3

b. H2Oc. NH4

+ d. OH-

Daily Quiz 5994. Identify the conjugate base:

H2SO4 → 2H+ + SO42-

a. H2SO4

b. H2Oc. H+ d. SO4

2-

Daily Quiz 5994. Identify the conjugate base:

H2SO4 → 2H+ + SO42-

a. H2SO4

b. H2Oc. H+ d. SO4

2-

Why do molecules lose hydrogen ions?

Why do molecules lose hydrogen ions?

Because water is polar.

Hydrogen ions will dissociate (come off) only if they are attached

with polar bonds.

HCl

HCl

HCl δ+ δ-

HCl δ+ δ-

HCl

Cl-

H2SO4

H2SO4

H2SO4

HSO4-

HSO4-

SO42-

Ethanoic acid

Ethanoic acid

H O H-C-C H O-H

Ethanoic acid

Ethanoic acid

Ethanoic acid

Ethanoic acid

Homework• Read pages 600-601.

• Do the Section 19.1 Assessment questions 4-9