1. Balance the following equations: (a) HI + NaOH → Nal + H20 (b) CH4 + O2 CO2 + H2O (c) Fe + CO2 → Fe2O3 CO

Chemistry: Principles and Reactions
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Chapter3: Mass Relations In Chemistry; Stoichiometry
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Practice for Chapters 4, 6, and 8 - Calculations 2A
Complete all questions! Show the calculations and the formulas used!
1. Balance the following equations:
(a)
HI +
NaOH →
Nal
+ H2O
(b)
CH4 +
CO2
+
H2O
(c)
Fe +
CO2 → Fe2O3
+
CO
(d)
Са(ОН)2 + HCІ
CaCl2
+ H2O
2. Classify the following ionic compounds as soluble or insoluble in water. Use the Solubility
Table in your book (Table 4-1)!
Sodium carbonate (NażCO3):
Lead sulfate (P6SO4):
Potassium chloride (KCl):
3. When a solution of barium chloride (BaCl%a9) is added to a solution of sodium sulfate
(Na,SO4(aq), a white precipitate of barium sulfate (BaS04(5) and sodium chloride
(NaClag) forms. Write the balanced complete molecular, ionic, and net ionic equations for the
precipitation reaction!
Molecular Equation:
Complete Ionic Equation:
Spectator ions:
Net Ionic Equation:
Transcribed Image Text:Practice for Chapters 4, 6, and 8 - Calculations 2A Complete all questions! Show the calculations and the formulas used! 1. Balance the following equations: (a) HI + NaOH → Nal + H2O (b) CH4 + CO2 + H2O (c) Fe + CO2 → Fe2O3 + CO (d) Са(ОН)2 + HCІ CaCl2 + H2O 2. Classify the following ionic compounds as soluble or insoluble in water. Use the Solubility Table in your book (Table 4-1)! Sodium carbonate (NażCO3): Lead sulfate (P6SO4): Potassium chloride (KCl): 3. When a solution of barium chloride (BaCl%a9) is added to a solution of sodium sulfate (Na,SO4(aq), a white precipitate of barium sulfate (BaS04(5) and sodium chloride (NaClag) forms. Write the balanced complete molecular, ionic, and net ionic equations for the precipitation reaction! Molecular Equation: Complete Ionic Equation: Spectator ions: Net Ionic Equation:
4. Identify the substance that is oxidized, the substance that is reduced, the oxidizing agent, and the
reducing agent:
Als) + Fe³+.
(aq) →
Al3+
+ Fe(s)
(aq)
Oxidized:
Reduced:
Oxidizing agent:
Reducing agent:
5. Calculate the following quantities:
(a) the formula weight of KMnO4
(b) the molecular weight of Sucrose, C12H22O11
(c) mass, in grams, of 1.50 x 10² mol CdS
(d) number of moles of NHẠC1 in 86.6 g of CdS
Transcribed Image Text:4. Identify the substance that is oxidized, the substance that is reduced, the oxidizing agent, and the reducing agent: Als) + Fe³+. (aq) → Al3+ + Fe(s) (aq) Oxidized: Reduced: Oxidizing agent: Reducing agent: 5. Calculate the following quantities: (a) the formula weight of KMnO4 (b) the molecular weight of Sucrose, C12H22O11 (c) mass, in grams, of 1.50 x 10² mol CdS (d) number of moles of NHẠC1 in 86.6 g of CdS
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