1. Determine the molar mass of KOH:
* K (Potassium) = 39.10 g/mol
* O (Oxygen) = 16.00 g/mol
* H (Hydrogen) = 1.01 g/mol
* Molar mass of KOH = 39.10 + 16.00 + 1.01 = 56.11 g/mol
2. Calculate the moles of KOH needed:
* Molarity (M) = moles of solute / liters of solution
* We have 2 M solution and 60 mL (0.06 L)
* Moles of KOH = 2 M * 0.06 L = 0.12 moles
3. Convert moles to grams:
* Grams of KOH = moles of KOH * molar mass of KOH
* Grams of KOH = 0.12 moles * 56.11 g/mol = 6.73 g
Therefore, you need 6.73 grams of solid KOH to prepare a 60 mL 2 M solution.