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

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

   Use the picture in question 4.

   • Extra HCl
   • Extra NaOH
   • 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 OH⁻ from NaOH remains
   • Extra H⁺ from HCl remains
8. 7.

   Pia says a strong acid and a strong base reach pH 7 at the equivalence point. Agree or disagree?

   • Agree: the salt left is neutral
   • Disagree: water itself is acidic
   • Disagree: the pH ends at 1
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?

    • HNO₃
    • HNO₂
    • H₂NO₂
11. 10.

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

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