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 water starts to evaporate
   • The NaOH turns into an acid
   • 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.

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

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

   Use the picture in question 3.

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

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

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

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

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

   What is HBr dissolved in water called, Ren?

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

    What is the formula of nitrous acid, Tala?

    • HNO₃
    • H₂NO₂
    • HNO₂
11. 10.

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

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