200g carbid impur ................ 100% impur
m.carbid .................................. 64% pur
= 128 g CaC2
128g V L
CaC2 + 2H2O --> C2H2 + Ca(OH)2
64 26
=> 128x26/64 = 52 L C2H2
3 moli md g
C3H4 + 2Br2 --> C3H4Br4
1 2x160
=> md = 3x2x160/1 = 640 g Br2
c% = mdx100/ms
=> ms= mdx100/c% = 640x100/5 = 1280 g sol. Br2