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10th grade Find a concentration from a titration worksheet

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Find a concentration from a titration

Grade 10 Science Worksheet

NameDate

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

  1. A described curve for 20 mL of HCl jumps at 25 mL of 0.1 M NaOH. HCl and NaOH react 1 : 1. What is the HCl concentration, Ari?

  2. A described curve for 25 mL of HCl jumps at 18.5 mL of 0.12 M NaOH. HCl and NaOH react 1 : 1. What is the HCl concentration, Bo?

  3. A described curve for 10 mL of HCl jumps at 32 mL of 0.05 M NaOH. HCl and NaOH react 1 : 1. What is the HCl concentration, Esme?

  4. Why is the pH low before the jump on a curve for HCl and NaOH, Kira?

    • Extra HCl remains
    • No acid is present
    • Extra NaOH remains

  5. Why is the pH near 12 after the jump, Luz?

    • Extra NaOH remains
    • The salt is basic
    • Extra HCl remains

  6. In HCl + NaOH → NaCl + H₂O, what is the mole ratio of acid to base, Milo?

    • 1 : 2
    • 2 : 1
    • 1 : 1

  7. How many moles of NaOH react with 1 mol of H₂SO₄, Noah?

    • 2
    • 0.5
    • 1

  8. At the equivalence point of HCl with NaOH, what equals the moles of HCl, Pia?

    • The pH of the mixture
    • The moles of NaOH added
    • The volume of NaOH added

  9. Which equation fits a 1 : 1 acid–base titration, Ren?

    • Ca × Va = Cb × Vb
    • Ca × Vb = Cb × Va
    • Ca + Va = Cb + Vb

  10. In Ca × Va = Cb × Vb, can both volumes stay in mL, Tala?

    • No: both must be in grams
    • Yes: the units cancel
    • No: Va alone may be in mL
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10th grade Find a concentration from a titration worksheet – printable
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About this worksheet

Find a concentration from a titration. Every version has 10 questions, and the answer key prints on the second page.

What your child will learn

  • I can read the equivalence-point volume off a described curve for a strong acid and a strong base.
  • I can find moles from molarity × liters.
  • I can find an unknown concentration with Ca × Va = Cb × Vb for a 1 : 1 reaction.
  • I can use a 1 : 2 ratio for sulfuric acid and say what happens to the result if the jump is misread.

Standard: none (IXL parity)

Words to know

titration: Finding a concentration by reacting with a solution of known concentration

titrant: The solution of known concentration

equivalence point: Where moles of base equal moles of acid

molarity, M: Moles of solute per liter of solution

titration curve: pH against volume added

Common mistakes

Your child multiplied by milliliters. Molarity is moles per liter, so turn mL into L first (÷ 1000).

Your child swapped the volumes. The acid's molarity = base molarity × base volume ÷ acid volume.

Your child used a 1 : 1 ratio. Sulfuric acid gives two H⁺, so it takes 2 NaOH per H₂SO₄; divide by 2.

Questions parents ask

What is the most common mistake with find a concentration from a titration?

Your child multiplied by milliliters. Molarity is moles per liter, so turn mL into L first (÷ 1000).

Are these 10th grade science worksheets free to print?

Yes. All 6 printable versions at each level are free to print, with the answer key, and no account is needed.

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