SampleQuizQuesweek2.docx

SampleQuizQuesweek2.docx - QUESTION 1 What are the...

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QUESTION 1 What are the respective concentrations (M) of Fe3+ and I- afforded by dissolving 0.500 mol FeI3 in water and diluting to 725 mL? A. 0.690 and 2.07 B. 0.276 and 0.828 C. 0.276 and 0.276 D. 0.145 and 0.435 E. 0.145 and 0.0483 QUESTION 2 Which of the following is a weak acid? A. HBr B. H2SO4 C. HNO3 D. HNO2 E. KOH QUESTION 3 What is the empirical formula of a compound that is 13.5% calcium, 10.8% oxygen, and 0.675% hydrogen by mass? A. CaOH B. Ca13O11H1 C. CaOH2 D. Ca2O2H2 E. Ca(OH)2 QUESTION 4 Which of the following are combustion reactions? A. NaNO3 (aq) arrow Na+(aq) + NO3-(aq) B. C2H6 (g) + O2 (g) arrow CO2 (g) + H2O (l) C. Mg(s) + HCl (aq) arrow H2 (g) + MgCl2 (aq) D. HCl (aq) + NaOH (aq) arrow HOH (l) + NaCl (s)
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QUESTION 5 Calcium oxide reacts with water in a combination reaction to produce calcium hydroxide. CaO (s) + H2O (l) arrow Ca(OH)2 (s)
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  • Fall '19
  • Oxide, Sodium hydroxide, CaO

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