CHEM 1A Lecture Notes - Lecture 8: Barium Chloride, Sodium Chloride, Stoichiometry

• School: UCSB
• Department: Chemistry and Biochemistry
• Course: CHEM 1A
• Professor: BERNT C M

Document Summary

Sugar water, sb tap water, do not conduct. Molarity = (number of moles of solute)/liters of solution. Use brackets to denote molarity of the solute, i. e. [hcl] Ie. i. e. 50 grams of nacl dissolved to make 250 ml of solution. And during a dilution process, moles of solute stays the same. So initial mol of solute = final mol of solute. Precipitation: formation of solid compound in a solution. Turns out, agcl is not aqueous, which is the solid. Reference the solubility table to determine, which will be given for the exam. Pb 2+ (aq) + 2no 3 (aq) - + 2k + (aq) + 2cl - (aq) pbcl 2 (s) + 2k + (aq) + 2no 3 . Cross out the spectator ions , which are those ions that don"t change. 75 ml of 0. 2m k 3 po 4 and 100ml of 0. 2m mg(no 3 ) 2 are mixed together. Calculate the mass in grams of the precipitate.