A. what chemical qualitative test can you make to prove for the presence or abse

Question

A. what chemical qualitative test can you make to prove for the presence or absence of unreacted salicylic acid? Briefly explain.
B. what alcohols are used in antifreeze coolant for automobile engines? Using table for solvents, explain what physical properties account for the use of these alcohols in antifreeze solutions.
C. Which alcohol will produce 2-methyl-sodium butanoate after reaction with I^2/Kl in basic conditions. *the 2 is superscript*

OST LAB QUESTIONS ALCOHOLS Experiment he syrmeas at aspirrequlres the use i saisylic acid and acetie anhydride as showr in the forleowing the reactian. + D -OH CHg -OH Salicylic acd (CyHso3) Aceic antpdis: (C4H50g) Acetic Acd (C 2 H402) (C sl3C4) Normally the aspirin prepared by this reaction can be contaminated with unneacted salicylic acid

Explanation / Answer

A. After the reaction, unreacted salicylic acid (with free phenolic group) can be tested by using FeCl3 which forms colored complexes with phenolic compounds.

B. The alcohol most commonly employed as antifreeze liquid is ethylene glycol.

The alcohol used must not freeze at the temperature it is supposed to reach after addition to automobile engine.

C. The alcohol that would form 2-methylsodium butanoate would be, 2-methylbutanol.

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