Question

При растворении железной пластинки в серной кислоте выделился газ объемом 6,72 дм3. Найдите массу раствора с массовой долей серной кислоты 5%, потребовавшегося для реакции.

Answer 1

Calculation of the Mass of the Solution

To find the mass of the solution, we need to consider the volume of the gas produced and the concentration of sulfuric acid.

Given: - Volume of gas produced: 6.72 dm^3 - Mass fraction of sulfuric acid: 5%

To calculate the mass of the solution, we can use the formula:

Mass of solution = Volume of gas produced / Concentration of sulfuric acid

Let's substitute the given values into the formula:

Mass of solution = 6.72 dm^3 / 5%

To proceed with the calculation, we need to convert the volume from dm^3 to liters and the concentration from a percentage to a decimal.

Converting the volume: 1 dm^3 = 1 liter

Therefore, the volume of gas produced is 6.72 liters.

Converting the concentration: 5% = 5/100 = 0.05

Now, let's substitute the converted values into the formula:

Mass of solution = 6.72 liters / 0.05

Calculating the mass of the solution:

Mass of solution = 134.4 liters

Therefore, the mass of the solution required for the reaction is 134.4 liters.

Please note that the search results did not provide specific information related to the given question. Therefore, the above calculation is based on the given information and general knowledge of the topic.