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Weak and strong should not be mistaken for dilute and concentrated. A dilute acid has the acid molecules mixed with a large amount of water, so that there is only a low concentration of H + ions.
A dilute acid or base solution is therefore one that has much fewer acid or base molecules per dm 3 of solution, hence the pH value would lie between 5 and 9; It does not necessarily mean that the acid or base is strong as it may be made from a weak acid or base which does not dissociate completely but a lot of it was added to the solution
Jul 12, 2023 · Thus the conjugate base of a strong acid is a very weak base, and the conjugate base of a very weak acid is a strong base. The conjugate base of a strong acid is a weak base and vice versa. We can use the relative strengths of acids and bases to predict the direction of an acid–base reaction by following a single rule: an acid–base ...
Jan 7, 2011 · pH. An acid dissociates into H + in solution according to: HA → H+ + A-. The stronger the acid, the greater the concentration of H+ and therefore the lowerthepH. pH value of a strong acid & base table. The most accurate way to determine the pH is by reading it off a pH meter. The pH meter is connected to the pH electrode which shows the pH ...
Sep 27, 2022 · HClO 4. Ca (OH) 2. Sr (OH) 2. Ba (OH) 2. The issue is similar with bases: a strong base is a base that is 100% ionized in solution. If it is less than 100% ionized in solution, it is a weak base. There are very few strong bases (Table \ (\PageIndex {1}\)); any base not listed is a weak base. All strong bases are OH – compounds.
Equation 4.28. NH3(g)base+H2O(l)acid⇌NH4 + (aq)acid+OH−(aq)base. Again, the double arrow indicates that the reaction does not go to completion but rather reaches a state of equilibrium. In this reaction, water acts as an acid by donating a proton to ammonia, and ammonia acts as a base by accepting a proton from water.
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Answers. A strong acid or base is 100% ionized in aqueous solution; a weak acid or base is less than 100% ionized. The overall reaction progress stops because the reverse process balances out the forward process. pH is a measure of the hydrogen ion concentration.
