Question

Смешали растворы, содержащие 36,5г HCl и 200г нитрата серебра (I). Найдите массы веществ в сухом остатке после выпаривания раствора.

Answer 1

200г     36,5г   хг
AgNO3+HCl=AgCl + HNO3
170г    36,5г   143,5

200/170 > 36,5/36,5
 Соляная кислота в недостатке, рсчеты ведем по ней
х= 36,5*143,5/36,5=143,5г

Answer 2

Calculation of the Masses of Substances in the Dry Residue after Evaporating the Solution

To find the masses of substances in the dry residue after evaporating the solution, we need to calculate the amount of each substance present in the initial solution.

Given: - Mass of HCl = 36.5 g - Mass of silver nitrate (AgNO3) = 200 g

To determine the masses of substances in the dry residue, we need to consider the chemical reactions that occur when the two solutions are mixed.

1. Reaction between HCl and AgNO3: - HCl + AgNO3 → AgCl + HNO3

From the reaction, we can see that HCl reacts with AgNO3 to form AgCl (silver chloride) and HNO3 (nitric acid).

2. Reaction between AgCl and NaNO3: - AgCl + NaNO3 → AgNO3 + NaCl

AgCl reacts with NaNO3 to form AgNO3 (silver nitrate) and NaCl (sodium chloride).

Based on these reactions, we can determine the following:

- The amount of AgCl formed is equal to the amount of HCl used. - The amount of AgNO3 formed is equal to the sum of the initial amount of AgNO3 and the amount of AgCl formed. - The amount of NaCl formed is equal to the amount of AgCl used.

Now, let's calculate the masses of substances in the dry residue:

1. Calculate the amount of AgCl formed: - The molar mass of HCl is 36.5 g/mol. - The molar mass of AgCl is 143.32 g/mol. - The amount of AgCl formed is equal to the amount of HCl used.

2. Calculate the amount of AgNO3 formed: - The molar mass of AgNO3 is 169.87 g/mol. - The amount of AgNO3 formed is equal to the sum of the initial amount of AgNO3 and the amount of AgCl formed.

3. Calculate the amount of NaCl formed: - The molar mass of NaCl is 58.44 g/mol. - The amount of NaCl formed is equal to the amount of AgCl used.

4. Calculate the mass of the dry residue: - The mass of the dry residue is equal to the sum of the masses of AgCl, AgNO3, and NaCl.

Please note that the exact calculations cannot be provided without the specific values of the initial amounts of HCl and AgNO3. However, the general procedure outlined above should help you calculate the masses of substances in the dry residue after evaporating the solution.