balancing equation and limiting reactant
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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?
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