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Where does the water come from when methyl propanoate forms? What is the formula of the ester?

Answer 1

The water comes from the OH of the acid and the H of the alcohol. The formula of the ester is CH₃CH₂C(=O)-OCH₃.

When concentrated sulfuric acid is present, propanoic acid and methanol react to form methyl propanoate. The reaction is catalyzed by concentrated sulfuric acid.

#underbrace("CH"_3"CH"_2"C(=O)-"color(red)("OH"))_color(red)("propanoic acid") + underbrace(color(red)("H")"-OCH"_3)_color(red)("methanol") stackrelcolor(blue)("conc. H"_2"SO"_4)(→) underbrace("CH"_3"CH"_2"C(=O)-OCH"_3)_color(red)("methyl propanoate") + underbrace(color(red)("H"_2"O"))_color(red)("water")#

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Answer 2

Wyatt Atkins

Water is produced as a byproduct when methyl propanoate forms. The formula of methyl propanoate is C4H8O2.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.