8 original questions from New Regents. The worksheet, answer key, and browser practice are free.

Neutralization and Stoichiometry 4 questions

Neutralization and Stoichiometry

New Regents original practice • Name: ____________________ Date: __________ Show your work for written answers.

Use n = MV with volume in liters. Balanced coefficients give the mole ratio. Assume the reactions shown go to completion.

Question 1

Which two ions combine to form water in an acid–base neutralization model?

  1. Na⁺ and Cl⁻
  2. H₃O⁺ and OH⁻
  3. Na⁺ and H₃O⁺
  4. Cl⁻ and OH⁻

Question 2

For HCl + NaOH → NaCl + H₂O, how many moles of NaOH react completely with 0.0300 mol HCl? Show the ratio.

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Question 3

For H₂SO₄ + 2NaOH → Na₂SO₄ + 2H₂O, how many moles of NaOH react completely with 1 mol H₂SO₄?

  1. 0.5 mol
  2. 1 mol
  3. 2 mol
  4. 4 mol

Question 4

Explain why 10.0 mL of acid and 10.0 mL of base do not always neutralize each other completely.

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Comparing Two Acid Samples 4 questions

Comparing Two Acid Samples

Use the information below to answer the questions.

A model uses 0.200 M NaOH to neutralize two acids. Use HCl + NaOH → NaCl + H2O and H2SO4 + 2NaOH → Na2SO4 + 2H2O.

SampleAcidConcentration (M)Volume (mL)
PHCl0.10050.0
QH2SO40.10050.0

Question 5

How many moles of acid are in sample P?

  1. 0.00250 mol
  2. 0.00500 mol
  3. 0.0100 mol
  4. 0.500 mol

Question 6

Calculate the volume of 0.200 M NaOH needed to react completely with sample Q. Show how the mole ratio is used.

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Question 7

Compared with P, how much NaOH does Q require?

  1. Half as many moles
  2. The same number of moles
  3. Twice as many moles
  4. Four times as many moles

Question 8

A student adds 25.0 mL of the NaOH to each acid sample. Which sample has enough NaOH for complete neutralization? Justify using amounts.

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