Neutralization reactions and naming acids and bases

Answer Key - Grade 10 Science Worksheet - Challenge Me

Circle the best answer, or write your answer on the line.

1. 1.

   A solution holds 0.01 mol of H₂SO₄ and 0.02 mol of HCl. How many moles of NaOH neutralize both completely, Ari?

   0.04 mol
2. 2.

   A solution holds 0.03 mol of H₂SO₄ and 0.015 mol of HCl. How many moles of NaOH neutralize both completely, Esme?

   0.075 mol
4. 3.

   Using the curve, why does pH jump so sharply between 24.9 and 25.1 mL, Jun?

   • The NaOH turns into an acid
   • The water starts to evaporate
   • The last H⁺ is used up there
5. 4.

   Using the curve, what is in the solution at 25.0 mL, Kira?

   Use the picture in question 3.

   • Extra HCl
   • NaCl and water
   • Extra NaOH
6. 5.

   Using the curve, why is the pH 11.96 at 30.0 mL, Luz?

   Use the picture in question 3.

   • The NaCl formed is a base
   • Extra H⁺ from HCl remains
   • Extra OH⁻ from NaOH remains
7. 6.

   Milo says every neutralization makes table salt, NaCl. Agree or disagree?

   • Agree: salt is just another word for NaCl
   • Agree: water and salt are the same thing
   • Disagree: the salt depends on the reactants
8. 7.

   Noah says HNO₃ + KOH makes NaCl and water. Agree or disagree?

   • Disagree: it makes KNO₃ and water
   • Agree: neutralization gives NaCl each time
   • Agree: potassium turns into sodium
9. 8.

   What is HBr dissolved in water called, Ren?

   • Hydrobromic acid
   • Hydrogen bromate
   • Bromic acid
10. 9.

    What is the formula of nitrous acid, Tala?

    • HNO₂
    • H₂NO₂
    • HNO₃
11. 10.

    Which acid and base make potassium sulfate, K₂SO₄, Zee?

    • H₂SO₄ and KOH
    • HCl and KOH
    • H₂SO₄ and NaOH