Good afternoon dear Students. Following you will find the instruction for your homework. You must bring it, in a paper next Monday February 10. Have a nice day T. Patricia Homework # 2

I. Balance the following chemical equations using the simple inspection method. Points 15

1) NaNO3 + PbO ----------- Pb(NO3)2 + Na2O

2) AgI + Fe2(CO3)3 ------- FeI3 + Ag2CO3

3) C2H4O2 + O2 ----------- CO2 + H2O

4) N2 + H2 ------- NH3

5) KClO3 ------------- KCl + O2

6) NaCl + F2 -------------- NaF + Cl2

7) H2 + O2 ---------- H2O

8) Pb(OH)2 + HCl --------------- H2O + PbCl2

9) AlBr3 + K2SO4 ----------- KBr + Al2(SO4)3

10) CH4 + O2 ----------- CO2 + H2O

11) C3H8 + O2 --------- CO2 + H2O

12) C8H18 + O2 ----------- CO2 + H2O

13) FeCl3 + NaOH ------------- Fe(OH)3 + NaCl

14) P + O2 ------------ P2O5

15 ) Na + H2O -------------- NaOH + H2

II. Balance the following chemical equations using the algebraic method.

1) Ag2O ------------- Ag + O2

2) S8 + O2 -------------- SO3

3) CO2 + H2O ------------- C6H12O6 + O2

4) K + MgBr2 ------------ KBr + Mg

5) HCl + CaCO3 ------------ CaCl2 + H2O + CO2

6) HNO3 + NaHCO3 --------- NaNO3 + H2O + CO2

7) H2O + O2 ----------- H2O2

8) NaBr + CaF2 ------ NaF + CaBr2

9) H2SO4 + HI ----- S + I2 + H2O

10) N2 + H2---------- NH3

11) KClO3 ------------- KCl + O2

12) NaCl + F2 ----------- NaF + Cl2

13) H2 + O2 ----------- H2O

14) Pb(OH)2 + HCl ---------- H2O + PbCl2

15) AlBr3 + K2SO4 ------------- KBr + Al2(SO4)3

III. Balance the following chemical equations using the simple inspection method or the algebraic method. Indicate the type of chemical reaction. Points 20

1) CH4 + O2 ----------- CO2 + H2O

2) C3H8 + O2 ----------- CO2 + H2O

3) FeCl3 + NaOH -------------- Fe(OH)3 + NaCl

4) P + O2 -------- P2O5

5) Na + H2O ----------- NaOH + H2

6) Ag2O -------------- Ag + O2

7) CO2 + H2O ------------ C6H12O6 + O2

8) HCl + CaCO3 ------------- CaCl2 + H2O + CO2

9) H2O + O2 ------------- H2O2

10) H2SO4 + NaNO2 -------- HNO2 + Na2SO4

IV. Stoichiometric problems. You must show all your work. Points 20

For each of the following find:

a. The limiting reactant b. The amount of product formed in moles and grams

c. The amount of excess in moles and grams

1. CaCl2 + AgNO3 ---------- AgCl + Ca(N03)2

Given: 4.32 moles of calcium chloride react with 8.75 moles of silver nitrate. Find the amount of silver chloride formed

2. Fe2O3 + CO ---------- Fe + CO2

Given: 15.0 g of iron (III) oxide reacts with 7.00g of carbon monoxide. Find the amount of Iron formed

3 NaCl + Pb(NO3)2 PbCl2 + NaNO3

Given: 7.5 g of sodium chloride reacts with 0.2 mole of lead (II) nitrate. Find the amount of Lead chloride formed.

4. Mg(OH)2 + H3PO4 ---------- Mg3(PO4)2 + H2O

Given: 57 g of magnesium hydroxide reacts with 86 g of hydrogen phosphate. Find the amount of Magnesium phosphate formed.

V. Theoretical and Percent Yield. Points 30

Given the following equation:

1. K2PtCl4 + NH3 --------> Pt(NH3)2Cl2 + KCl

a) Balance the equation.

b) Determine the theoretical yield of KCl if you start with 34.5 grams of NH3.

c) Starting with 34.5 g of NH3, and you isolate 76.4 g of Pt(NH3)2Cl2, what is the percent yield?

2. Given the following equation:

H3PO4 + 3 KOH ------ K3PO4 + 3 H2O

a) Balance the equation If 49.0 g of H3PO4 is reacted with excess KOH, determine the percent yield of K3PO4 if you isolate 49.0 g of K3PO4.

3. Given the following equation: K Al2(SO3)3 + NaOH ------> Na2SO3 + Al(OH)3

a) Balance the equation

b) If you start with 389.4 g of Al2(SO3)3 and you isolate 212.4 g of Na2SO3, what is your percent yield for this reaction?

4. Given the following equation:

Al(OH)3 (s) + HCl (aq) - ------> AlCl3 (aq) + H2O (l)

a) Balance the equation If you start with 50.3 g of Al(OH)3 and you isolate 39.5 g of AlCl3,

what is the percent yield?

5. Given the following equation:K2CO3 + HCl --------> H2O + CO2 + KCl

a) Balance the equation. B Determine the theoretical yield of KCl if you start with 34.5 g of K2CO3.

c) Starting with 34.5 g of K2CO3, and you isolate 3.4 g of H2O, what is the percent yield?