WOD and Video Quizzes

Solubility – the amt of solute that can dissolve in a solvent (100 mL of water)

X Saturated Solution: On the line Perfect ration of solute to solvent. X X Super-saturated Solution : Above the line To much solute, No more of the solute will be dissolved. Un-saturated Solution: Under the line Not enough solute, if more solute is added it can still be dissolved.

Practice Problem 1. Which compound is the most soluble at 40 degrees? 2. Which solute’s solubility changes the least as temperature increases? 3. How many grams of potassium bromide will dissolve in 100 g of water at 70 degrees?

Examine the solubility curve and decide if the following solutions would be saturated, unsaturated or supersaturated? g of NaClO3 at 20 degrees g of salt at 60 degrees g of potassium bromide at 100 degrees 4.At what temperature would a solution of 100 g of KNO3 in 100 g of water be considered unsaturated?

Now Complete the Graphing Assignment. Make the graph – LINE GRAPH, with a key (3 lines). Extra graph paper provided if you mess up first graph – BUT, keep original for the data and questions portion. Answer the question in complete sentences – extra paper provided if needed. Staple all sheets together and turn in.

Names for Compounds 1. a)Salt = NaCl b)You pick answer c)You pick answer d)NH4Cl = Ammonium Chloride e)KNO3 = Potassium Nitrate f)KI = Potassium Iodide g) Match the compound with the symbol.