Question

Определить титры хлорной кислоты по аммиаку и едкому ка- ли, если раствор ее приготовлен из навески 0,201 г, растворенной в мерной колбе на 500 мл.

Answer 1

Ответ:

Cm(HClO4)=0.201/(0.5*100.46)=0,004001 моль/литр

T(HClO4)=(0.00401*100.46)/1000=0,000402 г/мл

T(HClO4/NH3)=(0,000402*17.3)/100.46=0,0000692 г/мл

T(HClO4/KOH)=(0,000402*56.11)/100.46=0,000224 г/мл

Answer 2

Determining the Concentration of Hydrochloric Acid Solution

To determine the concentration of hydrochloric acid (HCl) solution, we can use the reaction between HCl and ammonia (NH3). The balanced chemical equation for this reaction is:

HCl + NH3 → NH4Cl

In this reaction, one mole of HCl reacts with one mole of NH3 to form one mole of ammonium chloride (NH4Cl).

To determine the concentration of HCl, we can titrate the HCl solution with a known concentration of ammonia solution (NH3). The reaction between HCl and NH3 is a neutralization reaction, where the acid (HCl) reacts with the base (NH3) to form a salt (NH4Cl) and water (H2O).

The titration process involves adding the ammonia solution gradually to the HCl solution until the reaction is complete. At the endpoint of the titration, all the HCl has reacted with the NH3, and the solution becomes neutral.

To calculate the concentration of HCl, we need to know the volume and concentration of the ammonia solution used in the titration, as well as the volume of the HCl solution.

Let's assume that the volume of the ammonia solution used in the titration is V1, the concentration of the ammonia solution is C1, and the volume of the HCl solution is V2.

The balanced equation tells us that the mole ratio between HCl and NH3 is 1:1. Therefore, the number of moles of HCl can be calculated using the equation:

moles of HCl = moles of NH3

The number of moles of NH3 can be calculated using the equation:

moles of NH3 = C1 * V1

Since the mole ratio between HCl and NH3 is 1:1, the number of moles of HCl is equal to the number of moles of NH3.

The concentration of HCl can be calculated using the equation:

concentration of HCl = moles of HCl / V2

Now, let's apply this calculation to the given information.

The mass of the HCl used is 0.201 g, which is dissolved in a 500 ml volumetric flask.

Unfortunately, the search results provided do not contain the necessary information to determine the concentration of the hydrochloric acid solution. To accurately determine the concentration, we would need the volume and concentration of the ammonia solution used in the titration.

If you have any additional information or if there is anything else I can assist you with, please let me know!