CHEM102 Lecture Notes - Lecture 11: Reagent, Init, Rice Chart

• School: University of Alberta
• Department: Chemistry
• Course: CHEM102
• Professor: Yoram Apelblat

Document Summary

A reminder that there is an online quiz due this friday. If you add (or subtract) two numbers, one very large compared with the other one, the result can be approximated by the larger number. Large number small number large number. Anything below 5% is acceptable error is 1% error is 1% When k is very small, the change x is also very small. Generally k values with negative powers of 10 are considered small, while those with positive powers are considered large. But always look for the relative magnitude to other data. [cl2] = 0. 01 m check calc approx calc x 100% < 5% K = 1. 6 x 10 5 for the gas phase rxn of nocl decomposing to nitric oxide and chlorine. Calculate the equilibrium concentrations when 0. 5 m nitrosyl chloride are introduced into the flask. 2 nocl (g) 2 no (g) + cl2 (g) K = 1. 6 x 10 5 = (0. 50 2x)2.