Chem 1030 Exam 3 - Forbes Fully Solved Graded A+ 2023 Passed

solubility guidelines for ionic compounds {Ans: all compounds with group 1 elements & NH4 are soluble all compounds with NO3, ClO4, CH3COO are soluble compounds with Cl-, Br-, I- are soluble except when with Ag+, Cu+, Hg2 2+, Pb 2+ compounds with SO4 2- are soluble except when with Ba 2+, Ca 2+, Hg2 2+, Pb 2+, Sr 2+ compounds with O2-, S2-, OH-, CO3 2-, PO4 3-, CrO4 2- are slightly soluble}molarity {Ans: the number of moles of a solute per liter solution}double displacement reaction {Ans: two elements are displaced (like switching partners) - similar things replace similar things}combination reaction {Ans: two or more reactants combine to form a new larger product}titrant {Ans: the standard solution added to the sample in a titration - the known - in the burette}deriving empirical formulas from percent composition {Ans: 1. assume you have 100 g of sample 2. convert percentages to mass values 3. convert mass to moles 4. calculate a mole ratio by dividing by the smaller mole value 5. convert mole ratio to small whole numbers}