<span>а) CH3-CH2-CH3 = CH3-CH=CH2 + Н2 (условия Pd, t) </span>
<span>CH3-CH=CH2 + H2O = CH3-CH(OH)-CH3 (Ni) </span>
<span>CH3-CH(OH)-CH3 = CH3-CH=CH2 + H2O (Pt, t) </span>
<span>CH3-CH=CH2 = CH3-CH(OH)-CH2(OH) </span>
<span>б) CH3-CH=CH2 + H2O = CH3-CH(OH)-CH3 (Ni) </span>
<span>CH3-CH(OH)-CH3 = CH3-CH=CH2 + H2O (Pt, t) </span>
<span>CH3-CH=CH2 + HBr = CH3-CH(Br)-CH3 (t, p) </span>
<span>CH3-CH(Br)-CH3 = CH3-CH=CH2 + HBr (Pt, t) </span>
<span>CH3-CH=CH2 + Br2 = CH3-CH(Br)-CH2(Br) </span>
<span>Как-то так)</span>
Mg + H2SO4 = MgSO4 + H2
Zn + H2SO4 = ZnSO4 + H2
m(Mg) = 24 г ( по усл. ) => n(Mg) =
24/24 = 1 моль => n1(H2) = 1 моль
m(Zn) = 130 г ( по усл. ) => n(Zn) = 130/65 = 2 моль => n2(H2) = 2 моль
=> n(H2) = 3 моль => V(H2) = 3×22,4 =
67,2 л
Тела состоят из молекул,молекулы состоят из атомов
Ca3(PO4)2=3CaO+P2O5
n(CaO)=m/M= 12 000/56=214,2(моль)
Пропорция:
x/1=214,2/3
x=71,4, n(фосфата кальция)= 71,4 моль
m=nM=71,4×310=22 134г= 22,134 кг