which has a lower ph pure water that is hot or pure water that is cold?
is it possible for water to be neutralbut have a ph less than or greater than 7.0?
how readily an acid donates a hydrogen is a fuction of how well the acid is able to accomodate the resulting negative charge it gains after donting. which should be stronger water or hypochlorous acid? why?
To determine which has a lower pH between hot and cold pure water, we need to understand the pH scale. The pH scale measures the acidity or basicity (alkalinity) of a substance. It ranges from 0 to 14, where 0 represents highly acidic, 7 is neutral, and 14 is highly basic.
Pure water is considered neutral, with a pH of 7. However, temperature can affect the pH of water. As water heats up, it can slightly decrease the pH due to the dissociation of water molecules into hydrogen ions (H+) and hydroxide ions (OH-). This increase in hydrogen ions would make hot water slightly more acidic than cold water. Therefore, hot pure water would typically have a slightly lower pH than cold pure water.
Regarding the second question, it is not possible for water to be neutral but have a pH less than 7 or greater than 7. By definition, a pH of 7 is considered neutral. Any pH value below 7 is considered acidic, while values above 7 are considered basic (alkaline). Therefore, if a substance has a pH less than 7, it would be classified as acidic and not neutral.
Regarding the acidity of water and hypochlorous acid, we need to compare their ability to donate hydrogen ions (H+). Acids donate H+ ions, and the strength of an acid is determined by how readily it donates H+ ions. In this case, hypochlorous acid (HOCl) is a stronger acid than water (H2O). This is because chlorine (Cl) in hypochlorous acid is more electronegative than oxygen (O) in water, making the bond between hydrogen and chlorine weaker. As a result, hypochlorous acid can more easily donate its hydrogen ion, making it a stronger acid compared to water.