University:
High School
Course:
High School Chemistry
Academic year:

2021
Views:

419

Pages:

5
Author:

mareangely2

Acid-Base Worksheet A solution that contains hydrogen ions as the only positive ions is classified as (a) acidic (b) basic (c) anionic (d) cationic Compared to a solution of a strong acid, a solution of a weak acid of the same molarity has a (a) lower concentration of acid molecules (b) higher concentration of anions (c) lower concentration of cations (d) lower concentration of water What is a difference between solutions of a weak acid and a strong acid of equal concentrations? (a) The strong acid is more concentrated. (b) The weak acid does not turn litmus red. (c) The weak acid does not conduct electricity. (d) The strong acid has more hydronium ions per liter. Which 1 pH value describes the most acidic solution? (a) 4 (b) 7 (c) 10 (d) 14 A sample of pure water contains (a) neither OH⁻ nor H₃O⁺ ions (b) equal concentrations of OH⁻ ions and H₃O⁺ ions (c) a larger concentration of H₃O⁺ than OH⁻ ions (d) a smaller concentration of H₃O⁺ ions than OH⁻ ions Which pair of ions is present in greatest concentration in a 1.0 M solution of nitric acid in water? (a) H₂NO₃⁺ and NO₃⁻ (b) H₂NO₃⁺ and OH⁻ (c) H₃O⁺ and NO₃⁻ (d) NO₂⁻ and OH⁻ Which group of the periodic table contains elements whose hydroxides are strong bases? (a) 1 (b) 13 (c) 15 (d) 17 Which formula represents a proton? (a) H₂O (b) H₃O⁺ (c) H₂ (d) OH⁻ What is the pH of an aqueous solution of C₆H₁₂O₆? (a) 1 (b) 7 (c) 11 (d) 14 Any solution that contains dissociated ions (a) is acidic (b) is alkaline (c) conducts electricity (d) has negligible vapor pressure How many moles of ions are produced when one mole of (NH₄)₂SO₄ dissolves in water? (a) 1 (b) 2 (c) 3 (d) 6 What volume of 0.80 M HCl will exactly neutralize 100 mL of 0.40 M KOH? (a) 20 mL (b) 50 mL (c) 80 mL (d) 200 mL 13. If exactly 5.0 mL of an aqueous HNO3 solution will neutralize 15 mL of 2.0 M NaOH, what is the molarity of the HNO3 solution? * (a) 0.50 * (b) 0.67 * (c) 3.0 * (d) 6.0 14. As more KOH is added to a KOH solution, the number of moles of HCl needed to neutralize the KOH solution * (a) increases * (b) decreases * (c) remains the same 15. What volume of 5.0 M NaOH is needed to neutralize 40 ml. of 2.0 M HCl? * (a) 8.0 mL * (b) 10 mL * (c) 16 mL * (d) 40 mL 16. Equal volumes of 0.1 M solutions of KOH and HNO3 are mixed. The pH of the resulting solution is closest to * (a) 7 * (b) 11 * (c) 3 * (d) 14 17. A 0.1 M HCl solution differs from a 0.1 M NaOH solution in that the HCl solution * (a) has a lower pH * (b) turns litmus blue * (c) contains fewer H3O+ ions * (d) will not conduct electricity 18. A pH value of 2 is ______ times more acidic than a pH value of 5 * (a) ten * (b) one hundred * (c) two hundred * (d) one thousand 19. At pH 2, methyl orange is ______ and bromocresol green is ______ * (a) orange... green * (b) red...blue * (c) red...yellow * (d) yellow...yellow 20. Which of the following is a base? * (a) HCl * (b) HBr * (c) HI * (d) NH3