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15 Απρ 2024 · Calculate the pH of a solution of a weak monoprotic weak acid or base, employing the "five-percent rule" to determine if the approximation 2-4 is justified. Predict whether an aqueous solution of a salt will be acidic or alkaline, and explain why by writing an appropriate equation.
7 Μαΐ 2024 · What is the reason for the phosphoric acid HX3POX4 H X 3 P O X 4 being a weak acid despite having a structure similar to that of sulfuric acid HX2SOX4? H X 2 S O X 4? I found some sources claiming that the resonance of one oxygen with double-bonded oxygen blocks the resonance of that of OHX−, O H X −, destabilising the negative charge.
27 Σεπ 2022 · NH 4 Cl is an example of an acid salt. The molecule NH 3 is a weak base, and it will form when it can, just like a weak acid will form when it can. So there are two general rules: If an ion derives from a strong acid or base, it will not affect the acidity of the solution.
Phosphoric Acid is a weak acid with the chemical formula H 3 PO 4. Phosphoric Acid is an acid-containing four atoms of oxygen, one atom of phosphorus, and three atoms of hydrogen. It is also known as phosphoric (V) acid or orthophosphoric acid.
Salts containing the anion H 2 PO 4-1 are weakly acidic. The tendency of this ion to dissociate is greater than its tendency to hydrolyze, that is, its K a 2 is larger than its K b. Because H 2 PO 4-1 is weakly acidic and of low toxicity, it is used as the acid in some baking powders.
17 Ιουλ 2015 · a) Write a balanced equation for the reaction. 2NaOH +HX3POX4 NaX2HPOX4 +2HX2O(l) 2 N a O H + H X 3 P O X 4 N a X 2 H P O X 4 + 2 H X 2 O (l) b) When some crystals of NaX2HPOX4 N a X 2 H P O X 4 were dissolved in water, the pH p H of the resulting solution was found to be 9.5 9.5. Calculate the hydrogen ion concentration of this solution.
The conjugate base of a strong acid is a weak base; therefore, the conjugate acid of a strong base is a weak acid. Acid-Base Pairs and Buffer Chemistry. A buffer solution contains a weak acid and its conjugate base or a weak base and its conjugate acid. Buffers work by reacting with a base or acid to control the pH of a solution.
