Calculate the number of grams of NaOH needed to prepare 552 mL of 0.333 M NaOH solution ?

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Answer 1 · 2018-04-18T05:01:35

#"7.36 g"#

Molarity is given by

#"Molarity" = "Moles of solute"/"Volume of solution (in litres)"#

#"0.333 M" = "n"/"0.552 L"#

#"n = 0.184 mol"#

Molar mass of #"NaOH"# is #"40 g/mol"#

So, mass of #"NaOH"# needed is

#0.184 cancel"mol" × 40\ "g"/cancel"mol" = color(blue)("7.36 g")#