Is h2co3 a strong or weak acid or base?
In general H2CO3 is considered to be weak acid but stronger than most organic acids. conjugate base of HCl is a weak base Cl-. thus when we examine the carbonic acid, H2CO3, when it loses a proton, H+, the base formed will be a strong and resonance staballized base CO3- -. Thus it is aweak acid.
Unlike strong acids, when weak acids, such as carbonic acid, are added to water it does not completely dissociate. Carbonic acid is formed when we bubble carbon dioxide through water. Remember that pH measures of the free hydrogen ion in solution.
- Phenolphthalein is often used as an indicator in acid–base titrations. For this application, it turns colorless in acidic solutions and pink in basic solutions. Phenolphthalein is slightly soluble in water and usually is dissolved in alcohols for use in experiments.
- Carbonic acid is a weak inorganic acid, which is also considered a solution of carbon dioxide in water. It only exists as a solution, and is also called acid of air, aerial acid, carbon dioxide solution, or dihydrogen carbonate. It is best known as a component of most aerated drinks, such as sodas and soft drinks.
- Carbonic acid is a type of weak acid formed from the dissolving of carbon dioxide in water. The chemical formula of carbonic acid is H2CO3. Its structure consists of a carboxyl group with two hydroxyl groups connected. As a weak acid, it partially ionizes, dissociates or rather, breaks apart, in a solution.
Most acids are weak acids. A weak acid is an acid that dissociates incompletely, releasing only some of its hydrogen atoms into the solution. Thus, it is less capable than a strong acid at donating protons. These acids have higher pKa than strong acids, which release all of their hydrogen atoms when dissolved in water.
- A weak acid is an acid that doesn't produce many hydrogen ions when in aqueous solution. Weak acids have relatively low pH values and are used to neutralize strong bases. Examples of weak acids include: acetic acid (vinegar), lactic acid, citric acid, and phosphoric acid.
- A strong acid is an acid where the pH is lower than, generally, 3. These acids are in very high concentration of H+ ions (an acid of pH 3 has 0.001 moles per liter of H+), while a weak acid's pH ranges from 3 to 7.
- When NaOH is added to a strong acid drop by drop, the pH increases linearly with volume of base. Most organic acids are weak acids. Examples include citric acid, acetic acid, ascorbic acid, malic acid, tartaric acid. This is important as weak acids can act as buffers absorbing hydrogen ions without change the pH.
Carbonic acid is not weaker than acetic. In fact, it is stronger, just as one might expect by looking at that extra electron-withdrawing substituent. The trouble is, carbonic acid is also pretty unstable.
- Because H C N is a weak acid, with the same logic its conjugate base (that is, the cyanide ion) is strong. It can take back the hydrogen ion more readily.
- It neither ionizes to form hydrogen ions, nor does it dissociates to give hydroxide ions. Therefore, it is neither an acid nor a base. In fact, CaCl2, or calcium chloride, is a salt.
- Hydrofluoric acid is a weak acid, unlike the other hydrogen halides, which are strong acids. The HCl bond should be less polarized than the HF bond. You are right, F is more electronegative than Cl, and if the only factor were electronegativity, HF would be stronger than HCl. But it isn't, HF is a weak acid.
Updated: 25th November 2019