Question

Doresc rezolvarea acestui test.

Answer 1

1. MCaC2 = 64g/mol

n = m/M = 600/64 = 9,375 moli CaC2

CaC2 + 2H2O => C2H2 + Ca(OH)2

n CaC2 = n C2H2 = 9,375 moli

MC2H2 = 26g/mol

n = m/M => m = n×M = 9,375×26 = 243,75g C2H2

2. MC4H10 = 58g/mol

m = n×M = 6×58 = 348g C4H10

3. 10H3C-CH=CH-CH2-CH3 + 8KMnO4 + 12H2SO4 ==> 5H3C-COOH + 5HOOC-CH2-CH3 + 4K2SO4 + 8MnSO4 + 37H2O

C(-1) -4e --> C(+3) ||5
C(-1) -4e --) C(+3) ||5
Mn(+7) +5e --> Mn(+2) ||8