Question

300g C 10% imp +400gH2SO4 a)Care din cele doua este mai luata in exces si cu cat b)Ce volum de gaz se rezulta din reactie si ce cantitate de apa se formeaza Dau Coroana Plz Repede

Answer 1

p= 90%=m,px100.m,i----> m,p= 300x90/100g= 270gC

niu,C= m/M= 270g/12g/mol= 22,5mol

niu.acid= m/M= 400g/98g/mol= 4,08mol

1mol.....2mol...............1mol...2mol...........2mol

C +   2H2SO4------> CO2+   2SO2   + 2H2O          reactie redox

       4,08mol...........x=2,04...y= 4,08......z=4,08mol

C este in exces!

V,gaze=niuxVm= (2,04+4,08)molX22,4 l/mol=..................calculeaza !!!!

m,apa= niuxM= 4,08molX18 g/mol=....................calculeaza !!!