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

   0.022 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 last H⁺ is used up there
   • The water starts to evaporate
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 HCl
   • Extra NaOH
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.

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

   • Disagree: it makes KNO₃ and water
   • Agree: potassium turns into sodium
   • Agree: neutralization gives NaCl each time
8. 7.

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

   • Disagree: the pH ends at 1
   • Agree: the salt left is neutral
   • Disagree: water itself is acidic
9. 8.

   What is HBr dissolved in water called, Ren?

   • Hydrogen bromate
   • Hydrobromic acid
   • Bromic acid
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