How many grams of sodium hydroxide (NaOH) are required to prepare 250 mL of a 1.00 molar (M) solution?
A) 2.5 g
B) 10.0 g
C) 25.0 g
D) 100 g

Question

Quizplus · Accepted Answer

To prepare a 1.00 M solution of NaOH in 250 mL, you need to calculate the amount of NaOH required using the formula: moles = molarity × volume (in liters). For a 1.00 M solution, 1 mole of NaOH is needed per liter. Since the volume is 250 mL (0.25 L), you need 0.25 moles of NaOH. The molar mass of NaOH is approximately 40 g/mol, so the mass required is 0.25 moles × 40 g/mol = 10.0 g.

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