Unformatted text preview: e: I» _—ﬁ“* Extra Problems
1. it 40.0 grams of Aluminum is mixed with 50.0 grams of manganese oxide, how many grams of manganese form given the unbalanced equation:
A1 + M1102 9 A1203 + MI] 2. l have 0.30 M H2804 and I need enough to react with 2.0 grams of aluminum. How many mL of sulfuric acid do I need given the unbalanced equation (1 g is equivalent to 1 mL):
Al + H2804 (aq) 9 H2 + A12(SO4)3 3. Based on the unbalanced equation below, calculate the number of grams of cobalt (ll)
hydroxide that would react with 60.0 mL of 0.250 M liCl solution: X
Co(OH)2 + HCl 9 CoCl2 + H20 4. The following unbalanced reaction is used commercially to prepare elemental bromine from its salt in solution:
NaBr + C12 9 NaCl + Br2
a. What is the molarity of 50.0 mL NaBr solution that is just sufﬁcient to react with
1.5E—3 moles ofC12?
b. What is the theoretical yield of the products? Extra Problems
1. If40.0 grams of Aluminum is mixed with 50.0 grams of manganese oxide, how many grams of manganese form given the unbalanced equation:
Al + MnO2 9 A1203 + M11 2. I have 0.30 M H2804 and I need enough to react with 2.0 grams of aluminum. How many mL
of sulfuric acid do I need given the unbalanced equation (1 g is equivalent to 1 mL):
A1 + H2804 (aq) 9 H2 + A12(SO4)3 3. Based on the unbalanced equation below, calculate the number of grams of cobalt (II)
hydroxide that would react with 60.0 mL of 0.250 M HCl solution: Co(Ol—l)2 + HCl 9 CoCl2 + H20 4. The following unbalanced reaction is used commercially to prepare elemental bromine from
its salt in solution:
NaBr + C12 9 NaCl + Br2 .
a. What is the mo larity of 50.0 mL NaBr solution that is just sufﬁcient to react with
1.5E—3 moles ofCl2?
b. What is the theoretical yield of the products? ...
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 Winter '08
 Able
 Chemistry

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