Combination of acids and alkalis When acids react with alkalis their H+ ions and OH- ions combine. Your browser does not support video playback Download the drug absorption video (MP4) Download the drug absorption video (WEBM) What will be formed when the H+ and OH- ions bind together? Write you answer in the text field below, then select the 'feedback' button. FeedbackH+ and OH- ions form water (H2O). Feedback Previous Next