Draw a mechanism for the reaction of the aldehyde with hydronium ion. In the first box, draw any necessary curved arrows. Show the products of the reaction in the second box. Include any nonzero formal charges and all lone pairs of electrons.

products are shown in the image attached.

Explanation:

When benzaldehyde reacts with hydronium ion, the benzaldehyde is protonated at the oxygen end of the carbonyl bond giving a action as shown in the mechanism attached. Other species may then be formed from the product of this reaction.

yes

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explanation:  

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