When 1 mol of gaseous hydrogen chloride is dissolved in enough water to make 1 L of solution, approximately how many HCl molecules remain in the solution?
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To determine the number of HCl molecules remaining in the solution, we need to calculate the number of HCl molecules in 1 mole first, then consider that the solution is 1 L.
Avogadro's number tells us that 1 mole of any substance contains 6.022 x 10^23 particles (atoms, molecules, etc.)
So, 1 mole of gaseous hydrogen chloride (HCl) contains 6.022 x 10^23 HCl molecules.
When this 1 mole of HCl is dissolved in enough water to make 1 L of solution, the concentration of HCl is 1 mole/L.
Therefore, in 1 L of the solution, there will still be 6.022 x 10^23 HCl molecules remaining.
To determine approximately how many HCl molecules remain in the solution, we need to understand the concept of molar concentration.
Given that 1 mole of gaseous hydrogen chloride is dissolved in enough water to make 1 liter of solution, we know that the molar concentration of the solution is 1 M (molar).
To calculate the number of HCl molecules, we can use Avogadro's number. Avogadro's number is approximately 6.022 x 10^23, and it represents the number of particles (atoms, molecules, or ions) in one mole of a substance.
So, in 1 M of HCl solution, there would be approximately 6.022 x 10^23 molecules of HCl, which is equivalent to Avogadro's number.
Therefore, approximately 6.022 x 10^23 HCl molecules remain in the solution.