chapter16practice

chapter16practice - 2011 Name_R.Lopezdela Vega...

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Final Examination Spring 2011. Name___________________________________ R.Lopez de la Vega Bubble in the form number in the section entitled Grade or Educ in the scantron. MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) Which is the net ionic equation for the neutralization of a weak acid with a strong base? A) H 3 O + ( aq ) + OH - ( aq ) 2 H 2 O( l ) B) HF( aq ) + OH - ( aq ) H 2 O( l ) + F - ( aq ) C) HF( aq ) + NaOH( aq ) H 2 O( l ) + NaF( aq ) D) HCl( aq ) + NaOH( aq ) H 2 O( l ) + NaCl( aq ) 1) 2) Which is the net ionic equation for the neutralization reaction of a strong acid with a weak base? A) HCl( aq ) + NaOH( aq ) H 2 O( l ) + NaCl( aq ) B) H 3 O + ( aq ) + OH - ( aq ) 2 H 2 O( l ) C) H 3 O + ( aq ) + NH 3 ( aq ) NH 4 + ( aq ) + H 2 O( l ) D) HCl( aq ) + NH 3 ( aq ) NH 4 Cl( aq ) 2) 3) What is the hydronium ion concentration in a solution prepared by mixing 50.00 mL of 0.10 M HCN with 50.00 mL of 0.050 M NaCN? Assume that the volumes of the solutions are additive and that K a = 4.9 × 10 - 10 for HCN. A) 4.9 × 10 - 10 M B) 7.0 × 10 - 6 M C) 2.4 × 10 - 10 M D) 9.8 × 10 - 10 M 3) 4) What is the common ion in a solution prepared by mixing 0.10 M NaCH 3 CO 2 with 0.10 M CH 3 CO 2 H? 4) 5) What is the pH of the resulting solution if 30.00 mL of 0.10 M acetic acid is added to 10.00 mL of 0.10 M NaOH? Assume that the volumes of the solutions are additive. K a = 1.8 × 10 - 5 for CH 3 CO 2 H. 5)
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