(R)2-CH-OH + (R)2-CH-OH = (R)2-CH-O-CH -(R)2 + H2O
(R’)2-CH-OH + (R)2-CH-OH = (R’)2-CH-O-CH -(R)2 + H2O
(R’)2-CH-OH + (R’)2-CH-OH = (R’)2-CH-O-CH -(R’)2 + H2O
n (H2O) = m\M = 1,62г\18г\моль = 0,09 моль
R = CnH2n+1, R’ = CmH2m+1, тогда:
М((R)2-CH-O-CH -(R)2) = 2(12n + 2n + 1) + 12+1+16+12+1+ 2(12n + 2n+1) = 56n + 46
М((R’)2-CH-O-CH -(R’)2) = 2(12m + 2m + 1) + 12+1+16+12+1+ 2(12m + 2m+1) = 56m + 46
M((R)2-CH-O-CH -(R’)2) = 2(12n + 2n + 1) + 12+1+16+12+1+ 2(12n + 2n+1) = 28n + 28m +46
0,03(56n + 46) + 0,03(56m + 46) + 0,03(28n + 28m +46) = 2,52n + 2,52 m + 4,14 = 10,44
2,5 n + 2,5 m = 6,3
n+ m = 2,5
n = 1,5 ≈ 2
m = 0,5 ≈ 1
(R)2-CH-OH + (R)2-CH-OH = (R)2-CH-O-CH -(R)2 + H2O
(R’)2-CH-OH + (R)2-CH-OH = (R’)2-CH-O-CH -(R)2 + H2O
(R’)2-CH-OH + (R’)2-CH-OH = (R’)2-CH-O-CH -(R’)2 + H2O
n (H2O) = m\M = 1,62г\18г\моль = 0,09 моль
R = CnH2n+1, R’ = CmH2m+1, тогда:
М((R)2-CH-O-CH -(R)2) = 2(12n + 2n + 1) + 12+1+16+12+1+ 2(12n + 2n+1) = 56n + 46
М((R’)2-CH-O-CH -(R’)2) = 2(12m + 2m + 1) + 12+1+16+12+1+ 2(12m + 2m+1) = 56m + 46
M((R)2-CH-O-CH -(R’)2) = 2(12n + 2n + 1) + 12+1+16+12+1+ 2(12n + 2n+1) = 28n + 28m +46
0,03(56n + 46) + 0,03(56m + 46) + 0,03(28n + 28m +46) = 2,52n + 2,52 m + 4,14 = 10,44
2,5 n + 2,5 m = 6,3
n+ m = 2,5
n = 1,5 ≈ 2
m = 0,5 ≈ 1
m1(ppa H2SO4) = 126 g
W1(H2SO4) = 10%
m2(ppa H2SO4) = 344 g
W2(H2SO4) = 18%
m3(H2SO4) = 40 g
m(H2O) = 100 g
W общ (H2SO4)-?
m1(H2SO4) = 126* 10% / 100% = 12.6 g
m2(H2SO4) = 344*18% / 100% = 61.92 g
m общ (H2SO4) = m1(H2SO4)+m2(H2SO4 + m3(H2SO4)
m общ (H2SO4)= 12.6 + 61.92+40 = 114.52 g
m общ (ppa H2SO4) = m1(ppa H2SO4) + m2(рра H2SO4) + m3(H2O)+m3 (H2SO4
m общ (ppa H2SO4) = 126 + 344 + 100+40 = 610 g
W общ (H2SO4) = m общ (H2SO4) / m общ (ppa H2SO4) * 100%
W общ (H2SO4) = 114.52 / 610 * 100% = 18.77%
ответ 18.77 %