CHEM 201 - 9.19.07

CHEM 201 - 9.19.07 - compound Chapter 5 Electromagnetic...

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

View Full Document Right Arrow Icon
CHEM 201 – September 19, 2007 MnO 4 - + Br - Mn 2+ + Br 2 o Break into half reactions MnO 4 - Mn 2+ 2Br - Br 2 o balance mass of elements MnO 4 - Mn 2+ +7 (-2)4 +2 2Br - Br 2 -1 0 o add electrons MnO 4 - + 5e - Mn 2+ 2Br - 2e - + Br 2 o add H or OH in base to balance charge MnO 4 - + 5e - + 8H + Mn 2+ + 4H 2 O 2Br - 2e - + Br 2 o multiply through to eliminate electrons 2(MnO 4 - + 5e - + 8H + Mn 2+ + 4H 2 O) 5(2Br - 2e - + Br 2 ) o add together and delete common terms 2MnO 4 - + 16H + + 10Br - 2Mn 2+ + 8H 2 O + 5Br 2 Assigning oxidation numbers o Cr 2 O 7 2- Start with Oxygen -2 charge multiply with number of oxygen (-2)*7 solve equation for oxidation number for Cr 2(x) + (-2)(7) = -2, where the right side is the charge of the
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: compound Chapter 5 Electromagnetic radiation o Frequency (nu) number of peaks that pass a given point per time o Wavelength distance from one wave to the next Parts of a wave o Nodes where the wave crosses an axis o Trough low point in wave o 1/ = R((1/m 2 ) (1/n 2 ) o R is radius o M is shell to shell o N is Max Planck proposed that energy was quantized o Amount depends on frequency E = h = hc/...
View Full Document

This note was uploaded on 04/07/2008 for the course CHEM 201 taught by Professor Harris during the Fall '07 term at Bucknell.

Page1 / 2

CHEM 201 - 9.19.07 - compound Chapter 5 Electromagnetic...

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