How much hydrogen chloride must be passed through 100 ml of water to obtain a 10%

| June 1, 2021 | education

How much hydrogen chloride must be passed through 100 ml of water to obtain a 10% hydrochloric acid solution? Enter the volume of hydrogen chloride (in liters), to the nearest tenth.

Answer: V = 6.7 liters.
Explanation of the solution to the problem: to solve this problem, you must use the following formula:
w = m (solv.v-va) / m (solution), where w is the mass fraction of the solute in the solution, m (solv.v-va) is the mass of the solute, m (solution) is the mass of the solution …
Let the mass of hydrogen chloride be x. Then we get:
0.1 = x / (100 + x)
Hence x = 11.11 g.
Now we find the amount of hydrogen chloride substance:
n = m / M = 11.11 / 36.5 = 0.3 mol.
The last step is to find the volume of hydrogen chloride:
V = n * Vm = 0.3 * 22.4 = 6.7 liters.



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