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 0.005 mol of H₂SO₄ and 0.012 mol of HCl. How many moles of NaOH neutralize both completely, Bo?

   0.022 mol
3. 3.

   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
5. 4.

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

   • The last H⁺ is used up there
   • The NaOH turns into an acid
   • The water starts to evaporate
6. 5.

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

   Use the picture in question 4.

   • Extra NaOH
   • Extra HCl
   • NaCl and water
7. 6.

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

   Use the picture in question 4.

   • The NaCl formed is a base
   • Extra H⁺ from HCl remains
   • Extra OH⁻ from NaOH remains
8. 7.

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

   • Agree: water and salt are the same thing
   • Agree: salt is just another word for NaCl
   • Disagree: the salt depends on the reactants
9. 8.

   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
10. 9.

    What is the formula of nitrous acid, Tala?

    • HNO₃
    • H₂NO₂
    • HNO₂
11. 10.

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

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