CHEM151Exam III Review Sheet

Chemistry (MasteringChemistry Series)

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Exam III Review Sheet: Chapter 4: • Know all the six types of reactions (be able to identify, predict products, and whether or not the reaction will go) ‐ Double replacement – solubility rules define precipitant o Acid/Base – produces water ‐ Redox Reactions o Single replacement – activity series o Combustion o Combination o Decomposition – happens with unstable compounds and/or in the presence of heat • Be able to identify oxidation numbers in complex compounds • Be able to identify and define oxidation/reduction and oxidizing/reducing agents in redox reactions • Be able to write the total ionic and net ionic equations for double replacement, acid/base, and single replacement reactions • Define and be able to identify and define strong, weak, and non‐electrolytes Chapter 3: Parts I & II • Conservation of Mass in chemical reactions • Avogadro’s number and the mole ‐ Need to know conversion ‐ Must know how to use o Ex. How many atoms in 1.4 mole of NaCl? o Ex. How many H atoms in 2 moles of CH4 • Molar Mass ‐ define ‐ Be able to calculate ‐ Be able to use in conversions and stoichiometry o Ex. How many moles of water in 2.6 g? o Ex. How many grams of C in 4.2 moles? o Ex. How many molecules in 4.6 g of CH4? • Solutions – Define solute, solvent, and solution ‐ Measure of concentration Molarity = (moles/L) ‐ Be able to calculate: o Ex. How many grams of NaCl is needed to make 100.0 ml of 1.0 M solution Dilutions: M1V1=M2V2 o Ex. How many milliliters of 12 M sulfuric acid is needed to make 150.0 ml of 1.2 M solution • Stoichiometry: ‐ Remember to balance reactions ‐ Be able to answer stoichiometry questions. o Given ‘X’ amount of reactant, how much product will form? o Given ‘X’ amount of reactant ‘A’ and ‘Y’ amount of reactant ‘B’, how much product will form? o Which is the limiting reactant? Be able to define limiting reactant o Be able to do stoichiometry with masses and solutions! ‐ Titrations o Define end point and equivalence point o Use in calculations (i.e. standardizations) ‐ Percent Yield – be able to calculate o Define Percent yield Theoretical yield Actual yield • Percent composition – define ‐ Empirical Formula – define and be able to calculate from given mass %’s ‐ Molecular Formula – define and be able to calculate from empirical if given molar mass ‐ ...
View Full Document

This document was uploaded on 09/27/2011.

Ask a homework question - tutors are online