How would the following errors change the calculated value of the percent oxalic acid in the radiator cleaner, that is would the calculated value of the percentage be high, low, or unchanged? Give a brief explanation of your reasoning. a. The experimenter consistently overshot the endpoint (i.e. added too much NaOH solution), of the titrations used to standardize the sodium hydroxide solution. b. The KHP used to standardize the NaOH was not pure, but contained approximately 10% by mass of the inert ionic compound potassium chloride, KCl.
How would the following errors change the calculated value of the percent oxalic acid in the radiator cleaner, that is would the calculated value of the percentage be high, low, or unchanged? Give a brief explanation of your reasoning.
a. The experimenter consistently overshot the endpoint (i.e. added too much NaOH solution), of the titrations used to standardize the sodium hydroxide solution.
b. The KHP used to standardize the NaOH was not pure, but contained approximately 10% by mass of the inert ionic compound potassium chloride, KCl.
3) Oxalic acid exists in the solid state as the monohydrate, H2C2O4•H2O. What would you use to calculate the percent oxalic acid monohydrate in the cleaner?
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