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  1. Question 2 • Which is the formula for the hydronium ion? • A) OH- • B) H2O • C) H3O+ • D) H3O- • E) H2O+

  2. Question 3 • Which one of the following statements about strong acids is true? • A) All strong acids have H atoms bonded to electronegative oxygen atoms. • B) Strong acids are 100% ionized in water. • C) The conjugate base of a strong acid is itself a strong base. • D) Strong acids are very concentrated acids. • E) Strong acids produce solutions with a higher pH than weak acids.

  3. Question 6 • What is the concentration of H+ in a 2.5 M HCl solution? • A) 0 • B) 1.3 M • C) 2.5 M • D) 5.0 M • E) 10. M

  4. Question 8 • The OH- concentration in a 7.5 x 10-3 M Ca(OH)2 solution is • A) 7.5 x 10-3 M. • B) 1.5 x 10-2 M. • C) 1.3 x 10-12 M. • D) 1.0 x 10-7 M. • E) 1.0 x 10-14 M.

  5. Question 9 • The OH- concentration in a 2.5 x 10-3 M Ba(OH)2 solution is • A) 4.0 x 10-12 M. • B) 2.5 x 10-3 M. • C) 5.0 x 10-3 M. • D) 1.2 x 10-2 M. • E) 0.025 M.

  6. Question 10 • What is the H+ ion concentration in a 4.8 x 10-2 M KOH solution? • A) 4.8 x 10-2 M • B) 1.0 x 10-7 M • C) 4.8 x 10-11 M • D) 4.8 x 10-12 M • E) 2.1 x 10-13 M

  7. Question 11 • Calculate the H+ ion concentration in a 8.8 x 10-4 M Ca(OH)2 solution. • A) 8.8 x 10-4 M • B) 1.8 x 10-3 M • C) 2.2 x 10-11 M • D) 1.1 x 10-11 M • E) 5.7 x 10-12 M

  8. Question 16 • Calculate the pH of a beer in which the hydrogen ion concentration is 6.3 x 10-5 M. • A) 4.2 • B) 4.8 • C) 5.63 • D) 9.8 • E) 14.0

  9. Question 18 • Calculate the H+ ion concentration in lemon juice having a pH of 2.4. • A) 4.0 x 10-2 M • B) 250 M • C) 0.38 M • D) 4.0 x 10-3 M • E) 12 M

  10. C C B A B C C B C E E A E A E A E D C B Answer Key – Chapter 15