What is the molarity of a solution containing 20 grams of NaOH in 500 milliliters of solution?
a-0.04M
b-0.5M
c-1M
d-2M
WB/MB=20÷40=0.5 then 0.5÷500×1000=1M
bruh no one answered the question is it
a.
b.
c.
or d.
To find the molarity of a solution, we need to know the amount of solute (in moles) and the volume of the solution (in liters).
First, let's calculate the amount of NaOH in moles. We can do this using the formula:
Moles of solute = Mass of solute / Molar mass of solute
The molar mass of NaOH is 22.99 g/mol for Na + 16.00 g/mol for O + 1.01 g/mol for H, which gives a total of 39.99 g/mol.
Moles of NaOH = 20 g / 39.99 g/mol ≈ 0.5 mol
Next, we convert the volume of the solution to liters:
Volume of solution = 500 mL = 500 mL / 1000 mL/L = 0.5 L
Finally, we can use the formula for molarity:
Molarity (M) = Moles of solute / Volume of solution
Molarity = 0.5 mol / 0.5 L = 1 M
Therefore, the molarity of the solution is 1M.
The correct answer is c-1M.