Finding out the concentration of an acid or base

[garytse86]

Hello I really need help for working out the concentration of an acid / base.

1) How can we use a simple thermochemistry measurement and a density measurement, to find the concentration of an acid or alkali? (other than titration)

2) How do you devise an experiment to estimate the concentration of an acid / alkali?

 

[Bystander]

1) freezing point depression; 2) look at the question again --- most people include the answer in the question statement.

 

[shefamariam]

I have 1 question?

What is the pharmaceutical application of acid-base titration?

Can anyone help me please?

 

[DDTea]

Freezing point depression/boiling point elevation is one way to do it. As far as density measurements go, simply measure the specific gravity. Concentration vs. specific gravity data is widely available in literature.

Another more creative way to measure concentration is by adding water to the acid and measuring the heat that is released.

 

[LudusRex]

1) To find the concentration of an acid or base using a simple thermochemistry measurement and a density measurement, we can use the following equation: concentration (mol/L) = mass (g) / volume (L) x molar mass (g/mol). We can use a simple calorimeter to measure the change in temperature when a known mass of the acid or base is added to a known volume of water. From the change in temperature, we can calculate the heat energy released or absorbed by the reaction. This, combined with the known molar mass of the acid or base, can help us calculate the concentration.

We can also use a density measurement to find the concentration. By measuring the density of a solution of known volume, we can calculate the mass of the solution. Then, by dividing the mass by the molar mass of the acid or base, we can find the number of moles present in the solution. Finally, dividing the number of moles by the volume of the solution will give us the concentration.

2) To devise an experiment to estimate the concentration of an acid or base, we can use the method outlined above. We can choose a known volume of water and add a known mass of the acid or base, while measuring the change in temperature using a thermometer or a calorimeter. We can then calculate the concentration using the equation concentration (mol/L) = mass (g) / volume (L) x molar mass (g/mol).

Alternatively, we can use a known volume of the acid or base solution and measure its density using a hydrometer or a density meter. From the density measurement, we can calculate the mass of the solution and then use the equation concentration (mol/L) = mass (g) / volume (L) x molar mass (g/mol) to find the concentration.

It is important to note that these methods may not be as accurate as titration, but they can provide a good estimate of the concentration of an acid or base. It is also important to use caution and follow safety precautions when handling strong acids or bases.