Reaction Stoichiometry for Nonmajors p1-5

Reaction Stoichiometry for Nonmajors p1-5 - Walker CH304k...

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Walker CH304k Page 1 of 7 Reaction Stoichiometry for Nonmajors Reaction stoichiometry is the study of the quantitative relationships among substances as they participate in chemical reactions. This study aims to answer the following questions: How much of one substance reacts with a given amount of another substance? Which reactant determines the amounts of products formed in a chemical reaction? Students tend to find this to be a challenging topic, in part because it requires extensive prerequisite knowledge, including understanding of: nomenclature chemical formulas law of conservation of mass chemical reaction types balancing chemical reactions molecular weight moles Avogadro’s number interpreting balanced chemical reactions, and grams ÅÆ moles conversions. To facilitate your success in this study, below are a few practice questions presented as a review. Review/Practice: 1. Write and balance the following reactions: a. methane burns b. Sulfur trioxide combines with water to form sulfuric acid. (You do not need to know the formula for sulfuric acid to solve this problem.) 2. For each chemical reaction shown below, identify the type of reaction. Some are completed for you. Note: sometimes one reaction can be of more than one reaction type. a. C + O 2 Æ CO 2 b. H 2 + O 2 Æ H 2 O c. KCl Æ K + + Cl - dissociation d. Fe(s) + 2 HCl Æ FeCl 2 (aq) + H 2 (g) displacement reaction e. 2 HgO(s) Æ 2 Hg(l) + O 2 (g) f. AgNO 3 (aq) + NaCl(aq) Æ AgCl(s) + NaNO 3 metathesis reaction (double-displacement) g. HCl + NaOH Æ H 2 O + NaCl acid/base neutralization h. Fe 2 O 3 + 3 CO Æ 2 Fe + 3 CO 2 oxidation-reduction (redox) i. S 8 + 24 F 2 Æ 8 SF 6 j. SiCl 4 Æ Si + 2 Cl 2 k. C 5 H 10 O + 7 O 2 Æ 5 CO 2 + 5 H 2 O l. H 2 CO 3 Æ H 2 O + CO 2
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Reaction Stoichiometry for Nonmajors p1-5 - Walker CH304k...

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