Answer to Question #160364 in General Chemistry for jess

Question

How many grams of Sodium Hydroxide is needed to produce 242g of table salt (NaCl)?

Fe + NaOH ---> Fe (OH)₃ +NaCl

Answer 1

FeCl₃ + 3NaOH ---> Fe (OH) ₃ + 3NaCl

$\nu$ (NaCl) = m/M= 242/58,5=4.14 mol

$\nu$ (NaCl)/3=$\nu$(NaOH)/3$\implies$ $\nu$(NaOH)=$\nu$ (NaCl)= 4.14 mol

m(NaOH)=$\nu$*M=4.14*40=165.6 g