A 25.00-mL sample of an H2SO4 solution of unknown concentration is titrated with a 0.1322 M KOH solution. A volume of 41.22 mL of KOH is required to reach the equivalence point. What is the concentration of the unknown H2SO4 solution?
Sabrina Salgueiro Unknown Analysis 5 Possible Cations: Na+, K+, NH4+, Ca2+, Mg(H2O)6 2+, Al(H2O)6 3+ Possible Anions: Cl, OH, SO42, HSO4, NO3, CO32, HCO3 Possible Insoluble Compounds: Ca(OH)2, CaSO4, CaCO3, MgCO3, Mg(OH)2 Unknown A = Pure (Either 1 cation + 1 anion, 1 insoluble compound, or 1 alum) Unknown B = Mixture (Anything goes, but only 1 insoluble compound max) Unknown A should take 30 minutes | Unknown B should take 90 minutes Before Starting Unknown: • Clean equipment • Get litmus paper, pH paper, matches, and the ring clamp for the Bunsen burner • Indicators and Reagents you will need: (put them in plastic bottles so they are readily available to you) 6MHAc Sodium cobaltinitrite reage
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