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27 Nov 2019

It was found that a 20.00 mL portion of a solution of oxalicacid, H2C2O4, requires 7.08 mL of0.200 M K2Cr2O7 forcomplete reaction in an acidic solution. In the reaction, theoxidation product is CO2 and the reduction product isCr3+. How many milliliters of 0.450 M NaOH arerequired to completely neutralize theH2C2O4 in a separate 20.00 mLsample of the same oxalic acid solution?

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Patrina Schowalter
Patrina SchowalterLv2
25 Apr 2019

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What is the concentration of the unknown HClO4 solution? The neutralization reaction is:
HClO4(aq)+NaOH(aq)→H2O(l)+NaClO4(aq)

2) A 25.00 mL sample of an unknown H3PO4 solution is titrated with a 0.100 M NaOH solution. The equivalence point is reached when 26.33 mL of NaOH solution is added.
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1c. In the laboratory you dissolve 24.0 g of iron(III) fluoride in a volumetric flask and add water to a total volume of 125 . mL.

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5. What volume of a 0.389 M hydrochloric acid solution is required to neutralize 24.1 mL of a 0.113 M calcium hydroxide solution?
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6. An aqueous solution of hydrochloric acid is standardized by titration with a 0.113 M solution of barium hydroxide.
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7.
Potassium hydrogen phthalate is a solid, monoprotic acid frequently used in the laboratory as a primary standard. It has the unwieldy formula of KHC8H4O4. This is often written in shorthand notation as KHP.

If 29.3 mL of a potassium hydroxide solution are needed to neutralize 1.23 grams of KHP, what is the molarity of the potassium hydroxide solution?
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