2023 · Q73
Which one of the following statements is not correct?
General ScienceChemistry
- AHydrogen ions cannot exist alone.
- BAll compounds containing hydrogen are acidic.
- CSeparation of H ions from HCI molecules cannot occur in the absence of water.
- DWater soluble bases are known as alkalis.
Explanation
Statement (b) is not correct: many hydrogen-containing compounds are not acidic at all, e.g., methane (CH4) and ammonia (NH3). The other statements are correct: free H+ ions cannot exist alone (they exist as H3O+), HCl cannot release H+ ions without water, and water-soluble bases are indeed called alkalis. Hence (b).