1 / 22

Catalyst

Catalyst. Balance the following chemical reaction: C 6 H 12 O 6 + O 2  H 2 O + CO 2 2. Determine the molar mass (formula weight) of the following compounds: a. H 2 SO 4 b. Pb(NO 3 ) 2. End. Hair Dryer in a Bath Tub. Justify – TPS.

tyrone-mooney
Download Presentation

Catalyst

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Catalyst • Balance the following chemical reaction: C6H12O6 + O2 H2O + CO2 2. Determine the molar mass (formula weight) of the following compounds: a. H2SO4 b. Pb(NO3)2 End

  2. Hair Dryer in a Bath Tub

  3. Justify – TPS • What chemical properties lead to the explosive reaction of dropping a hair dryer in water?

  4. Lecture 3.1 – Electrolytes and Net Ionic Equations

  5. Lecture 3.1 – Net Ionic Equations and Electrolytes • LT 3.1 – I can identify a compound as being a strong, weak, or non – electrolyte. • LT 3.2 – I can translate a chemical reaction into a net ionic equation that contains only the ions/molecules that participate in the chemical reaction.

  6. Electrolytes vs. Nonelectrolytes • When you dissolve compounds in water, sometimes they dissociate and sometimes they do not. • Electrolyte – Any compound that breaks into ions when in solution and can conduct electricity • Nonelectrolyte – Any compound that does not form ions when in solution and cannot conduct electricity.

  7. Ionic Compounds are Electrolytes • When a ionic compound is dissolved in water, it breaks apart into positive and negative ions. • Polar water molecule breaks up the ionic crystal

  8. Covalent Compounds are Nonelectrolytes • When a ionic compound is dissolved in water, it cannot be broken apart. • Polar water molecule cannot break apart these compounds because there are no ions

  9. Strong vs. Weak Electrolytes • Electrolytes can be characterized as being either strong or week based on the amount they dissociate. • Strong Electrolytes – Compounds that completely dissociate in water. • Weak Electrolytes – Compounds that almost dissociate completely in water

  10. Class Example • Is the following compound an electrolyte or a nonelectrolyte • If it is an electrolyte is is strong or weak? KCl

  11. Table Talk • Is the following compound an electrolyte or a nonelectrolyte • If it is an electrolyte is is strong or weak? C6H12O6

  12. Net Ionic Equations • Oftentimes we see chemical equations written as this: Pb(NO3)2 (aq) + 2KI (aq)  PbI2 (s) + 2KNO3 • The electrolytes that are in aqueous solutions can be written as their ions: Pb2+ + 2NO32- + 2K+ +2I-  PbI2+ 2K+ +2NO3- Molecular Equation Complete Ionic Equation

  13. Net Ionic Equations • Many of the ions are present on both sides, so they do not participate in the chemical reaction and can be canceled out. Pb2+ + 2NO32- + 2K+ +2I-  PbI2+ 2K+ +2NO3- Net Ionic Equation Pb2+ (aq) + 2I- (aq)  PbI2 (s)

  14. Class Example • Write the net ionic equation for the following reaction: Mg(NO3)2 (aq) + Na2CO3 (aq)  MgCO3 (s) + 2 NaNO3 (aq)

  15. Table Talk • Write the net ionic equation for the following reaction: SrBr2 (aq) + K2SO4 (aq)  SrSO4 (s) + 2 KBr (aq)

  16. Investigate and Check

  17. Exit Ticket • Are the following compounds electrolytes or non-electrolytes? If it is an electrolyte, then is it strong or weak? a. KBr b. CO2 c. CH3COOH (a weak acid) • Write the net ionic equation for the following reaction: Na2CO3 (aq) + Co(NO3)2 (aq)  2NaNO3 (aq) + CoCO3 (s)

  18. Closing Time • Read sections 4.1 and 4.2 in textbook • Complete Homework 3.1 Net Ionic Equations for class Thursday/Friday • Lab 5 Pre-Lab due at the start of the next class

More Related