Lecture_08_012712 - Lecture 8 Stoichiometric Calculations Outline(Chapter 3.6-3.7 Chemical Equations(3.6 Balancing Chemical Equations(3.7

Info iconThis preview shows pages 1–7. Sign up to view the full content.

View Full Document Right Arrow Icon
Lecture 8: Stoichiometric Calculations • Outline (Chapter 3.6-3.7): ± Chemical Equations (3.6) ± Balancing Chemical Equations (3.7) ± Stoichiometric Calculations (3.8) ± Calculations Involving a Limiting Reactant (3.9) • Problems for Extra Practice: 3.57, 3.59, 3.65, 3.67, 3.69, 3.71
Background image of page 1

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

View Full DocumentRight Arrow Icon
Mass Balance (or Atom Balance) - same number of each element on each side of the equation: (1) start with largest/most complicated molecule (highest subscript values) (2) progress to other elements, leaving lone elements for last (3) make all whole numbers (4) re-check atom balance How to Balance Equations 1 C H 4 (g) + O 2 (g) 1 C O 2 (g) + H 2 O (g) 1 CH 4 (g) + 2 O 2 (g) 1 C O 2 (g) + 2 H 2 O (g) 1 C H 4 (g) + O 2 (g) 1 CO 2 (g) + 2 H 2 O (g) 1 CH 4 (g) + 2 O 2 (g) 1 CO 2 (g) + 2 H 2 O (g)
Background image of page 2
Balancing Chemical Equations The first step in the industrial preparation of nitric acid, an important chemical used in the manufacture of fertilizer, drugs and other substances, involves the reaction between ammonia (NH 3 ) and oxygen gas to form nitric oxide (NO) and water. Write a balanced equation for this reaction.
Background image of page 3

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

View Full DocumentRight Arrow Icon
Concept Review Balance the following equations: PCl 5 (l) + H 2 O(l) b H 3 PO 4 (aq) + HCl(g) CaO(s) + C(s) b CaC 2 (s) + CO 2 (g)
Background image of page 4
Concept Review Give the balanced equation for the following: Solid iron (III) sulfide reacts with gaseous hydrogen chloride to form solid iron(III) chloride and hydrogen sulfide gas.
Background image of page 5

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

View Full DocumentRight Arrow Icon
4 Fe( s ) + 3 O 2 ( g ) 2 Fe 2 O 3 ( s ) An equation can be read in “moles” by placing the words “ moles of ” between each coefficient and formula. 4 moles of
Background image of page 6
Image of page 7
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 02/14/2012 for the course CHEM 142 taught by Professor Zoller,williamh during the Fall '07 term at University of Washington.

Page1 / 24

Lecture_08_012712 - Lecture 8 Stoichiometric Calculations Outline(Chapter 3.6-3.7 Chemical Equations(3.6 Balancing Chemical Equations(3.7

This preview shows document pages 1 - 7. Sign up to view the full document.

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