Chem Mastery Conc Stoich Set 1

2 Questions
Chem Mastery Conc Stoich Set 1
Sample Question

H3PO4 + 3NaOH --> Na3PO4 + 3H2O How much 0.20 M H3PO4 is needed to react with 100cm3 of 0.10 M NaOH?

16cm3

17cm3

18cm3

19cm3

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Questions and Answers
  • 1. 
    H3PO4 + 3NaOH --> Na3PO4 + 3H2O How much 0.20 M H3PO4 is needed to react with 100cm3 of 0.10 M NaOH?
    • A. 

      16cm3

    • B. 

      17cm3

    • C. 

      18cm3

    • D. 

      19cm3

  • 2. 
    3KOH(aq) + H3PO4(aq) --> K3PO4(aq) + 3H2O(l) 25.00 mL of 1.50 M phosphoric acid solution is titrated with 0.455 M potassium hydroxide solution.  What volume of base solution is needed for complete neutralization?
    • A. 

      247cm3

    • B. 

      257cm3

    • C. 

      267cm3

    • D. 

      277cm3