## Titration of a Polyprotic Acids

In the previous few posts, we have been discussing acid-base titrations involving pH calculations and analyzing the titrations curves. A typical acid-base titration curve can be obtained, for example, based on the reaction of HCl and NaOH:     Check … Read more

## Titration of a Weak Base by a Strong Acid

In the previous post, we discussed the titration of a weak acid, CH3CO2H with a strong base, NaOH. The main difference compared to the strong acid-base titrations was that the conjugate base of the weak acid, forming during the reaction … Read more

## Titration of a Weak Acid by a Strong Base

In the previous post, we discussed the titration of 25.0 mL of 0.100 M strong acid HCl with 0.100 M NaOH. Today, we will focus on the titration of a weak acid with strong bases, so we can still use … Read more

## Strong Acid–Strong Base Titrations

Earlier in the semester, or perhaps in your Chem II class, you learned about acid-base titrations which were used to determine the concentration of an acid or a base. For this, we are using a standard solution (titrant) which is … Read more

## Will a Precipitate Form at the Given Concentrations? Ksp and Q

When discussing the molar solubility and solubility product constant (Ksp), we mentioned that the values pertain to saturated solutions of the given compound.    For example, the molar solubility of BaOS4 is 3.87 x 10-5 mol/L. Therefore, it starts precipitating only … Read more

## Ksp and Molar Solubility Practice Problems

In this set of practice problems, we will work on calculating the solubility product constant (Ksp) from the molar solubility of the compound, and vice versa, the Ksp of compounds in pure water, in the presence of salts with common … Read more

## The Effect of pH on Solubility

The solubility of almost any ionic compound is affected by the pH of a solution. The effect is more pronounced when one or both of the ions in the compound are slightly basic or acidic. For example, magnesium hydroxide, an … Read more

## The Effect of a Common Ion on Solubility

In the previous post, we talked about the solubility and solubility product constant (Ksp) of ionic compounds with low solubility. For example, the dissolution equation and the Ksp for CaF2 are:   CaF2(s) ⇆ Ca2+(aq) + 2F–(aq) Ksp = [Ca2+][ … Read more

## Ksp and Molar Solubility

Ksp – The Solubility Product Constant Remember, earlier when discussing precipitation reactions, we used tables with rules for solubility to classify compounds as water-soluble or insoluble. For example, BaCl2, according to the rules, is soluble, while BaSO4 is insoluble in … Read more

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