Answer:
10.5M HCl
Explanation:
Using the chemical reaction:
KOH + HCl → H₂O + KCl
Where 1 mol of KOH reacts per mole of HCl
We can solve this problem converting the mass of KOH to moles using its molar mass. The moles of KOH added are equal to moles of HCl in the solution. That is:
Moles KOH = Moles HCl
154.9g KOH * (1mol / 56.1g) = 2.761 moles
The molarity of the solution (Moles HCl per liter of solution) is:
2.761moles HCl / 0.262L =
10.5M HCl
