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Chem 202 Chapter 14 Exam with Questions and Answers

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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

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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

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