Homework ­ Worksheet
1
Solution Stoichiometry
SOLUTION STOICHIOMETRY ­ the methods used to calculate the quantities of substances in solution.
­ involves molar concentrations and the volumes of solutions.
Solutions of ammonia and phosphoric acid are used to produce ammonium hydrogen phosphate fertilizer. What volume of 14.8 mol/L NH3(aq) is needed for the ammonia to react completely with 10.0 L of 12.9 mol/L H3PO4(aq) to produce fertilizer?
2NH3(aq) + H3PO4(aq)
(NH4)2HPO4(aq)
2
Solutions of ammonia and phosphoric acid are used to produce ammonium hydrogen phosphate fertilizer. What volume of 14.8 mol/L NH3(aq) is needed for the ammonia to react completely with 10.0 L of 12.9 mol/L H3PO4(aq) to produce fertilizer?
2NH3(aq) + H3PO4(aq)
(NH4)2HPO4(aq)
3
If 25.00 mL HCl acid with a concentration of 0.1234 M is neutralized by 23.45 mL of NaOH, what is the concentration of the base? NaOH(aq) + HCl(aq)
NaCl(aq) + H2O(l)
4
Worksheet
1) H2SO4(aq) + NH3(aq) ⇒ (NH4)2SO4(aq)
2) Ca(OH)2(aq) + Al2(SO4)3(aq) CaSO
3) Na2CO3(aq) + FeCl3(aq) NaCl
4(s) + Al(OH)3(aq)
(aq) + Fe2(CO3)3(s)
4) NaOH(aq) + H3PO4(aq) Na 3PO4(aq) + H2O(l)
5) CuSO4(aq) + Ca(NO3)2(aq) CaSO
4(s) + Cu(NO3)2(aq)
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