Chem 202 Chapter 14 Exam with Questions
and Answers
What is the acidic equilibrium eq ANSWER HA + H2O = A- + H3O+
What is the basic equilibrium eq ANSWER A- + H2O = OH- + HA
Write the acidic equilibrium eq for CH3NH3+ ANSWER CH3NH3+ = H+ + CH3NH2
Write the basic equilibrium equation for C₆H₅NH₂ ANSWER C₆H₅NH₂(aq) + H₂O(l) ⇌
OH⁻(aq) + C₆H₅NH₃⁺(aq)
Write the formula of the conjugate acid of CH₃CH₂O⁻ ANSWER CH3CH2OH
Write the formula of the conjugate base of C₆H₅SH. ANSWER C6H5S-
The concentration of hydroxide ion in an aqueous solution at 25 °C is 2.2 × 10⁻⁴ M. What is
the concentration of the hydronium ion? ANSWER 4.45 x 10^-11
The pH of a 0.0068 M solution of HNO₃ is ANSWER 2.2
The pH of a 0.0028 M solution of Ca(OH)₂ is ANSWER 11.7
What mass of NaOH would need to be dissolved in 500.0 mL of water to produce a solution
with a pH of 12.40? ANSWER 0.5 g
and Answers
What is the acidic equilibrium eq ANSWER HA + H2O = A- + H3O+
What is the basic equilibrium eq ANSWER A- + H2O = OH- + HA
Write the acidic equilibrium eq for CH3NH3+ ANSWER CH3NH3+ = H+ + CH3NH2
Write the basic equilibrium equation for C₆H₅NH₂ ANSWER C₆H₅NH₂(aq) + H₂O(l) ⇌
OH⁻(aq) + C₆H₅NH₃⁺(aq)
Write the formula of the conjugate acid of CH₃CH₂O⁻ ANSWER CH3CH2OH
Write the formula of the conjugate base of C₆H₅SH. ANSWER C6H5S-
The concentration of hydroxide ion in an aqueous solution at 25 °C is 2.2 × 10⁻⁴ M. What is
the concentration of the hydronium ion? ANSWER 4.45 x 10^-11
The pH of a 0.0068 M solution of HNO₃ is ANSWER 2.2
The pH of a 0.0028 M solution of Ca(OH)₂ is ANSWER 11.7
What mass of NaOH would need to be dissolved in 500.0 mL of water to produce a solution
with a pH of 12.40? ANSWER 0.5 g
