Acids Bases and Salts

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Q. If 50 mL of 0.1 M NaOH is mixed with 50 mL of 0.1 M HCl, what will be the resulting pH?
  • A. 7
  • B. 1
  • C. 14
  • D. 0
Q. What is the concentration of hydroxide ions in a solution with a pH of 11?
  • A. 1 x 10^-3 M
  • B. 1 x 10^-11 M
  • C. 1 x 10^-4 M
  • D. 1 x 10^-7 M
Q. What is the effect of adding a strong acid to a buffer solution?
  • A. Increase pH
  • B. Decrease pH
  • C. No effect
  • D. Increase alkalinity
Q. What is the molarity of a solution if 5 grams of NaCl is dissolved in 250 mL of water? (Molar mass of NaCl = 58.5 g/mol)
  • A. 0.34 M
  • B. 0.20 M
  • C. 0.10 M
  • D. 0.50 M
Q. What is the pH of a 0.01 M solution of acetic acid (Ka = 1.8 x 10^-5)?
  • A. 2.87
  • B. 4.76
  • C. 3.14
  • D. 5.00
Q. What is the pH of a solution with a hydrogen ion concentration of 1 x 10^-7 M?
  • A. 7
  • B. 0
  • C. 14
  • D. 1
Q. What volume of 0.5 M H2SO4 is needed to neutralize 100 mL of 0.1 M NaOH?
  • A. 50 mL
  • B. 25 mL
  • C. 100 mL
  • D. 75 mL
Q. Which of the following indicators would be suitable for a strong acid-strong base titration?
  • A. Methyl orange
  • B. Phenolphthalein
  • C. Bromothymol blue
  • D. Litmus
Q. Which of the following is a strong acid?
  • A. Acetic acid
  • B. Hydrochloric acid
  • C. Citric acid
  • D. Carbonic acid
Q. Which of the following salts is formed from a strong acid and a weak base?
  • A. NaCl
  • B. NH4Cl
  • C. K2SO4
  • D. CaCO3
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