Blake Lecture 12-3-08

Blake Lecture 12-3-08 - Chlorous acid? 1. 0.15M = mol/L 2....

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Blake 12-3-08 Chemistry EX 1: Which has the highest boiling point? 1. H 2 Se 2. H 2 O – ANSWER (Usually the heaviest is the increased BP, but not b/c of Hydrogen bonding = special cases) 3. H 2 S EX 2: What is the wavelength of a photon emitted from H atom in n = 3 to n = 1 transition? 1. -2.18 x 10 -18 J = Rydberg Constant 2. E n = -2.18 x 10 -18 / n 2 3. Delta E atom = E f -E i 4. Energy from the atom = the photon 5. E = hv 6. C = λ v 7. E = -(-2.18 x 10 -18 /3 2 ) = 2.42 x 10 -19 J + -2.18 x 10 -18 J 8. Delta E = -1.94 x 10 -18 J 9. -1.94 x 10 -18 J = 6.626 x 10 -34 J v 10. v = 2.92 x 10 15 per second 11. 3.0 x 10 8 = λ (2.92 x 10 15 ) 12. λ = 1.03 x 10 -7 m EX 3: How much of a 0.15M sodium phosphate solution is required to react with 26.0 g of a
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Background image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Chlorous acid? 1. 0.15M = mol/L 2. m/MW = # moles 3. Na 3 PO 4 + 3HClO 2 ⇒ H 3 PO 4 + 3NaClO 2 4. 26 g / 68.59 MW = 0.374 moles of HClO 2 5. 0.374 / 3 = 0.125 moles 6. 0.125 / 0.15 M = 0.831 L EX 4: What is the net ionic equation for sodium phosphate reacting Chlorous acid? Na 3 PO 4 (aq)+ 3HClO 2 (aq) ⇒ 3NaClO 2 (aq) + H 3 PO 4 (aq) (MOLECULAR EQUATION) Total Ionic Equation = is it soluble? 3Na + + PO 4 3-+ 3HClO 2 ⇒ H 3 PO 4 + 3Na + + 3ClO 2 – (TOTAL IONIC) Remove spectator ions = things that don’t change PO 4 3-+ 3HClO 2 ⇒ H 3 PO 4 + 3ClO 2 – (NET IONIC EQUATION)...
View Full Document

This note was uploaded on 03/22/2011 for the course CHEMISTRY 1307 taught by Professor Tamarahanna during the Spring '09 term at Texas Tech.

Page1 / 2

Blake Lecture 12-3-08 - Chlorous acid? 1. 0.15M = mol/L 2....

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online