Final answer:
The molarity of the HCl solution can be calculated using the formula M = moles of solute / volume of solution. By calculating the moles of Ca(OH)₂ that reacted with the HCl solution and then converting them to moles of HCl, we can determine the molarity of the HCl solution.
Step-by-step explanation:
To calculate the molarity of the HCl solution, we can use the equation:
Molarity (M) = moles of solute / volume of solution (in liters)
First, we need to calculate the moles of Ca(OH)₂ that reacted with the HCl solution:
Moles of Ca(OH)₂ = molarity of Ca(OH)₂ * volume of Ca(OH)₂
Now, since the reaction between HCl and Ca(OH)₂ is 1:2, the moles of HCl can be calculated by multiplying the moles of Ca(OH)₂ by 2:
Moles of HCl = 2 * moles of Ca(OH)₂
Finally, to find the molarity of the HCl solution, we divide the moles of HCl by the volume of HCl:
Molarity of HCl = moles of HCl / volume of HCl