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Quiz by Edel

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31 questions
Show answers
  • Q1
    What are the products of the reaction between barium hydroxide and hydrochloric acid?
    barium hydroxide and water
    barium chloride and barium hydride
    barium chloride and water
    chloric acid and barium
    30s
  • Q2
    What is the complete ionic equation for the following chemical equation? BaCl2(aq) + Na2SO4(aq) → BaSO4(s) + 2NaCl(aq)
    Ba2+ (aq) + SO42− (aq) → BaSO4 (s)
    Ba2+ (aq) + 2Cl− (aq) + 2Na+ (aq) + SO42− (aq) → 2Na+ (aq) + 2Cl−(aq) + BaSO4(s)
    BaCl2(aq) + 2Na+ (aq) + SO42− (aq) → 2Na+ (aq) + 2Cl− (aq) + BaSO4(s)
    Ba2+ (aq) + Cl− (aq) + Na+ (aq) + SO42− (aq) → Na+ (aq) + Cl− (aq) + BaSO4(s)
    30s
  • Q3
    The carbon dioxide produced by cells is transported as bicarbonate ions, HCO3−. What reaction transforms bicarbonate back into carbon dioxide?
    HCO3−(aq) + H+(aq) → CO2(g) + H2O(l)
    HCO3−(aq) + H+(aq) → H2O(l)
    HCO3−(aq) + H+(aq) → CO2(g) + 2O(g)
    HCO3−(aq) + H+(aq) → CO2(g)
    30s
  • Q4
    What is the net ionic equation for the following reaction? HNO3(aq) + K2S(aq) → H2S(g) + KNO3(aq)
    NO3− (aq) + K+ (aq) → H2S(g)
    NO3− (aq) + K+ (aq) → KNO3(aq)
    H+(aq) + S2− (aq) → H2S(g)
    H+(aq) + S2− (aq) → KNO3(aq)
    30s
  • Q5
    In the rate-law expression, Rate = k[A], what does the symbol k represent?
    reaction order
    instantaneous rate
    concentration
    specific rate constant
    30s
  • Q6
    What are the individual steps in a complex reaction known as?
    complex steps
    rate-determining steps
    elementary steps
    intermediate steps
    30s
  • Q7
    What is the net ionic equation for the following reaction? HCl(aq) + KOH(aq) → H2O(l) + KCl(aq)
    H+ (aq) + OH− (aq) →H2O(l)
    H+ (aq) + K+ (aq) →HK(aq)
    Cl− (aq) + OH− (aq) →ClOH(aq)
    Cl− (aq) + K+ (aq) →KCl(aq)
    30s
  • Q8
    Chemical A breaks down into chemical B. At t = 0, [A] = 0.100M. At t = 10.0 s, [A] = 0.075M. What is the average reaction rate?
    0.0025 mol/Ls
    0.25 mol/Ls
    0.0975 mol/Ls
    0.0925 mol/Ls
    30s
  • Q9
    Which of the following is the theory that states that atoms, molecules, and ions must collide for a chemical reaction to occur?
    collision theory
    accident theory
    mechanism
    reaction theory
    30s
  • Q10
    Raising the temperature of a reaction _________ the rate of the reaction by increasing the collision frequency and the energy of the collisions forming the activated complex.
    Increase
    Decrease
    30s
  • Q11
    A balanced chemical equation is a direct presentation of the ___________.
    law of conservation of mass
    law of conservation of momentum
    ideal gas law
    law of multiple proportions
    30s
  • Q12
    In a chemical equation, the number written in front of the chemical formula is the_____________.
    Subscript
    Reactant
    Coefficient
    Product
    30s
  • Q13
    Balance the following equation. What is the coefficient for hydrogen fluoride? SiO2 + HF →SiF4 + H2O
    1
    4
    2
    5
    30s
  • Q14
    In the chemical equation below, which of the components is a precipitate? HCl(aq) + AgNO3(aq) → AgCl(s) + HNO3(aq)
    AgCl(s)
    HNO3(aq)
    HCl(aq)
    AgNO3(aq)
    30s
  • Q15
    As reactants are consumed and fewer particles are available to collide, most chemical reactions _____.
    stop
    slow down
    continue at same rate
    speed up
    30s

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