Draw the structure of the product formed in the reaction of an epoxide with ethoxide ion. If more than one stereochemical product is possible, draw only one isomer.

See explanation and image attached

Explanation:

The most common reaction of epoxide rings is the ring opening reaction. This ring opening reaction serves to relieve the stress in the ring.

Now, The first step in the acid catalysed epoxide ring opening reaction is the protonation of the epoxide.

This is now followed by the attack of the nucleophile. Subsequent deprotonation regenerates the acid catalyst and yields the product.

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