18.

أ)

H2SO4 + 2NaOH ------> Na2SO4 + 2H2O

ب)

g H2SO4 = 0.75 mol NaOH x (1mol H2SO4/2molNaOH) x 98.09 g/mol H2SO4 = 37 g H2SO4

ج)

g Na2SO4 = 0.75 mol NaOH x (1mol Na2SO4/2molNaOH) x 142.05 g/mol Na2SO4 = 53 g Na2SO4

g H2O = 0.75 mol NaOH x (2mol H2O/2molNaOH) x 18.02 g/mol H2O = 14 g H2O