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Catalyst: Tuesday February 4 , 2014

Catalyst: Tuesday February 4 , 2014. Log into ExitTicket and complete the launch. Today’s Objective : -SWBAT use Ka /Kb to predict the strengths of acids and bases -SWBAT solve problems using Ka and Kb. Photo of the day. Ion Product Example. Complete on doc cam. Weak Acid (Using Ka ).

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Catalyst: Tuesday February 4 , 2014

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  1. Catalyst: Tuesday February 4, 2014 Log into ExitTicket and complete the launch Today’s Objective: -SWBAT use Ka/Kb to predict the strengths of acids and bases -SWBAT solve problems using Ka and Kb

  2. Photo of the day

  3. Ion Product Example • Complete on doc cam

  4. Weak Acid (Using Ka) • Complete on doc cam

  5. Table Talk ⇌ • You have a solution of the following acid: HOC6H5 (aq) + H2O (l) H3O+ (aq) + OC6H5- (aq) • Given that the equilibrium concentrations are [HOC6H5] = 0.062 M, [H3O+ ] = 1.5 x 10-4 M, and [OC6H5- ] = 3.1 x 10-5 M, calculate the value of Ka.

  6. Model • Calculate the pH of a 0.036 M Nitric Acid(HNO3) solution HNO3D H+ + NO3-

  7. Discussion Question • Calculate the pH of a 0.036 M Sodium Hydroxide solution NaOHD OH- + Na+

  8. Quicket • Using the table below, which compound would you expect to be the strongest acid? A B C D

  9. Quicket • Using the table below, which compound would you expect to be the strongest acid?

  10. Table Talk • Calculate the Ka for the ammonium ion (Kb = 1.8 x 10-5)

  11. Table Talk • Consider the following two acids and their ionization constants: HCOOH Ka = 1.7 x 10-4 HCN Ka = 4.9 x 10-10 Which conjugate base (HCOO- or CN-) is stronger?

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