How many gram of naoh are in 400 ml of a .5 in naoh
To find out how many grams of NaOH are in a solution, we first need to calculate the number of moles of NaOH in the solution using the given concentration and volume. The formula to calculate the number of moles is:
Moles = Concentration (in moles/L) x Volume (in liters)
Given:
Concentration of NaOH = 0.5 M (moles per liter)
Volume of solution = 400 mL = 0.4 L (converted to liters)
Using the formula, we can calculate the number of moles of NaOH:
Moles = 0.5 M x 0.4 L
Moles = 0.2 moles
Now, we need to convert the moles of NaOH to grams. We can do this by using the molar mass of NaOH, which is 22.99 grams/mol for Na, 16 grams/mol for O, and 1.01 grams/mol for H.
Molar mass of NaOH = 22.99 + 16.00 + 1.01
Molar mass of NaOH = 40.00 grams/mol
Finally, we can calculate the grams of NaOH in the solution:
Grams = Moles x Molar mass
Grams = 0.2 moles x 40.00 grams/mol
Grams = 8 grams
Therefore, there are 8 grams of NaOH in 400 mL of a 0.5 M NaOH solution.