Grams of Sodium hydroxide : 26.72 g
Further explanation
Molality shows the number of moles dissolved in every 1000 grams of solvent.
m = n. (1000 / p)
m = Molality
n = Number of moles of solute
p = Solvent mass (gram)
Can be written :
[tex]\tt m=\dfrac{mol~solute}{kg~solvent}[/tex]
m=2.88
kg solvent(water)=232 g=0.232 kg
[tex]\tt mol~solute=m\times kg~solvent\\\\mol~solute=2.88\times 0.232=0.668[/tex]
[tex]\tt mass=mol\times MW\\\\mass=0.668\times 40~g/mol=26.72~g[/tex]
