In which of the following compounds does hydrogen act as a Lewis acid?

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Q: In which of the following compounds does hydrogen act as a Lewis acid?

Solution: In HCl, hydrogen can act as a Lewis acid by accepting an electron pair.

Steps: 5

Step 1: Understand what a Lewis acid is. A Lewis acid is a substance that can accept an electron pair.
Step 2: Look at the compound HCl. It consists of hydrogen (H) and chlorine (Cl).
Step 3: In HCl, hydrogen has a positive charge because it is bonded to chlorine, which is more electronegative.
Step 4: Since hydrogen has a positive charge, it can accept an electron pair from another atom or molecule.
Step 5: Therefore, in HCl, hydrogen acts as a Lewis acid by accepting an electron pair.