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Chemical Reaction Quizzes & Trivia

This is a quiz about the types of chemical reactions and their stoichiometry. Equip yourself with a periodic table, calculator and scratch papers before starting this quiz. Don't include the units in all your answers. GOOD LUCK!


Questions and Answers
  • 1. 
    Consider oxalic acid, H2C2O4.The reaction of oxalic acid with magnesium metal produces hydrogen gas and magnesium oxalate. What type of reaction is this (called reaction 1 - write this equation for later questions)? [acid/base, precipitation or redox]
  • 2. 
    The reaction of oxalic acid with calcium chloride produces calcium oxalate and hydrogen chloride. What type of reaction is this(called reaction 2 - write this equation for later questions)? [acid/base, precipitation or redox]
  • 3. 
    The reaction of oxalic acid with potassium hydroxide produces potassium oxalate and water. What type of reaction is this(called reaction 3 -write this equation for later questions)? [acid/base, precipitation or redox]
  • 4. 
    In the balanced equation of reaction 1, what is the coefficient of hydrogen gas?
  • 5. 
    In the balanced equation of reaction 2, what is the coefficient of calcium chloride?
  • 6. 
    In the balanced equation of reaction 3, what is the coefficient of potassium hydroxide?
  • 7. 
    136C is an isotope of carbon.  What will be the element produced when it undergoes beta decay?
  • 8. 
    136C is an isotope of carbon.  What will be the element produced when it undergoes electron capture?
  • 9. 
    136C is an isotope of carbon.  What will be the element produced when it undergoes positron emission?
  • 10. 
    How many moles (in 3 significant figures) are there in 10.0 grams of magnesium? [AW, Mg = 24.3 g/mol]
  • 11. 
    How many molecules (in ___ x 1023, 3 significant figures) are there in 10.0 grams of magnesium? [AW, Mg = 24.3 g/mol]
  • 12. 
    In the reaction (oxalic acid + magnesium), how many grams (3 significant figures) of oxalic acid will exactly react with 10.0 g magnesium? [atomic weights: Mg = 24.3 g/mol, H = 1 g/mol, C = 12 g/mol, O = 16 g/mol]
  • 13. 
    If 10.0 grams magnesium reacts with excess oxalic acid, how many grams (3 significant figures) of magnesium oxalate will be produced? [atomic weights: Mg = 24.3 g/mol, H = 1 g/mol, C = 12 g/mol, O = 16 g/mol]
  • 14. 
    If 10.0 grams magnesium reacts with  10.0 g oxalic acid, how many grams(3 significant figures) of hydrogen gas will be produced? [atomic weights: Mg = 24.3 g/mol, H = 1 g/mol, C = 12 g/mol, O = 16 g/mol]
  • 15. 
    What is the mass percent (3 significant figures)of C in oxalic acid? [atomic weights:H = 1 g/mol, C = 12 g/mol, O = 16 g/mol]