дано
m(ALCL3) = 2.67 g
m(NaOH) = 2.8 g
n(Al(OH)3)-?
AlCL3+3NaOH-->3NaCL+Al(OH)3
M(AlCL3) = 133.5 g/mol
n(AlCL3) = m/M = 2.76 / 133.5 = 0.02 mol
M(NaOH) = 40 g/mol
n(NaOH) = m/M = 2.8 / 40 = 0.07 mol
n(AlCL3) < n(NaOH)
n(AlCL3) = n(Al(OH)3) = 0.02 mol
n(Al(OH)3) = 0.02 mol
ответ 0.02 моль
дано
m(ALCL3) = 2.67 g
m(NaOH) = 2.8 g
n(Al(OH)3)-?
AlCL3+3NaOH-->3NaCL+Al(OH)3
M(AlCL3) = 133.5 g/mol
n(AlCL3) = m/M = 2.76 / 133.5 = 0.02 mol
M(NaOH) = 40 g/mol
n(NaOH) = m/M = 2.8 / 40 = 0.07 mol
n(AlCL3) < n(NaOH)
n(AlCL3) = n(Al(OH)3) = 0.02 mol
n(Al(OH)3) = 0.02 mol
ответ 0.02 моль