Ch100: Fundamentals for Chemistry 12/3/2020
Ch 8 Handout (additional)
In a CH100 lab (not yours), copper(II) hydroxide precipitate is produced from 10.0 grams of
copper(II) sulfate:
2NaOH(aq) + CuSO4(aq) Na2SO4(aq) + Cu(OH)2(s)
1) Calculate the molar mass of each reactant and product in this reaction.
2) How many moles of copper(II) sulfate are consumed during this chemical reaction?
3) How many “molecules” of copper(II) sulfate (numerical quantity not moles) are
consumed in this reaction?
4) Using the coefficients of this reaction, determine how many moles of sodium
hydroxide are reacted in this chemical process?
5) How many moles of copper(II) hydroxide and sodium sulfate are produced by this
reaction?
6) How many molecules (numerical quantity not moles) of copper(II) hydroxide and
sodium sulfate are produced by this reaction?
7) How many grams of copper(II) hydroxide and sodium sulfate are produced by this
reaction?
8) What is the % mass of each element in copper(II) hydroxide?
