7. You are provided a 0.15M NaOH solution for this experiment. How many grams of NaOH...

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Question

Answer 1

Answer #1

Concentration of NaOH = 0.15M

i,e Molarity of NaOH = 0.15M

Volume of the solution = 1.0L

molar mass of NaOH = 40.0 g/mole

Molarity = number of moles / volume in L

number of moles = Molarity x volume in L

number of moles = 0.15M x 1.0L = 0.15 moles

number of moles of NaOH = 0.15 moles

but, number of moles of NaOH = mass of NaOH / molar mass of NaOH

mass of NaOH = number of moles of NaOH x molar mass of NaOH

mass of NaOH = 0.15 x 40.0 = 6.0 grams

mass of NaOH required = 6.0 grams

Answer 2

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