Potassium hydrogen phthalate (KHC8H4O4, molar mass 204.2 g/mol) is frequently used to standardize solutions of NaOH. The reaction is:
NaOH(aq) + KHC8H4O4(aq) --> H2O(l) + NaKC8H4O4(aq)
Calculate the mass of potassium hydrogen phthalate needed to react with 30 mL of 0.10 M NaOH.
1
Expert's answer
2012-10-16T11:56:46-0400
n of NaOH -------- 30 ml 0.1 mol in 1000 ml
n=0.003 mol
0.003 m NaOH(aq) + KHC8H4O4(aq) ---> H2O(l) + NaKC8H4O4(aq) 204.2
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