How does the pH of normal rain compare with the pH of vinegar?

Normal rain typically has a pH of around 5.6 due to the presence of dissolved carbon dioxide, which forms weak carbonic acid. In contrast, vinegar, which is primarily acetic acid, has a pH ranging from about 2 to 3, making it significantly more acidic than rain. This means that vinegar is much more acidic than normal rainwater, which is only slightly acidic.