Question: 1. Compare and contrast the terms primary standard and secondary standard. pure, stable, high molemmber weight no hydration, no water. Primary standard Secondary standard

1. Compare and contrast the terms "primary standard" and "secondary standard." pure, stable, high molemmber weight no hydration, no water. Primary standard Secondary standard - prepared in the lab for a specific analysis. 2. Calculate the mass of oxalic acid dihydrate (C,H,O, 2H,O) needed to prepare 500.0 mL. of 0.2500 M oxalic acid solution. 0.2500 M sox . During a titration, a student used 31.92 mL of a NaOH solution to neutralize 30.0 mL of 0.2488 M oxalic acid solution. (Note: Oxalic acid is diprotic!) a. Write the balanced equation for the neutralization reaction. (See question 2 for the formula of oxalic acid.) b. How many moles of oxalic acid were present in the sample?

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