please show all steps Question number 1. Write the formula and calculate the mol

Question

please show all steps

Question number 1.

Write the formula and calculate the molar mass of KHP (KHP is not potassium hydrogen phosphorus).

Question number 2.

When conducting this experiment, why is it necessary to standardize your NaOH solution before titrating your unknown acid?

Question number 3.

Give an example of a triprotic acid other than H3PO4. Write a balanced chemical equation for the reaction of this acid with sodium hydroxide.

Question number 4.

A 0.5438-g sample of KHP required 22.37 mL of sodium hydroxide solution to reach the phenolphthalein endpoint. Calculate the molarity of the NaOH solution.

Question number 5.

35.04 mL of the NaOH solution standardized in question 4 was used to titrate 24.84 mL of a citric acid solution to the phenolphthalein endpoint. Calculate the molar concentration of the citric acid solution.

Explanation / Answer

1. KHP is nickname for Potassium hydrogen phthalate; KHC8H4O4; molar mass = 204.23 g

2. Standardize means to determine a precise and

accurate concentration

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