Question

Ca( OH2 ) + H2S04 = CaSO4 + 2H2O
Stim ca in 10 moli de CaS04 sunt 10 de moli de Ca ( 400g Ca ) . Aflati masa solutiei de H2S04 , 20% utilizata
Va rog, ajutati-ma

Answer 1

MCaSO4=ACa+AS+4*AO=40+32+4*16=136

1mol CaSO4....136gCaSO4...40gCa

10moli CaSO4...xgCaSO4...400gCa

x=136*400/40=1360 g CaSO4

MH2SO4=2*AH+AS+4*AO=2*1+32+4*16=98

y g H2SO4/98=1360g/136 => y=98*1360/136=980g H2SO4 reacționat

c=md*100/ms => ms=md*100/c ms=980*100/20=4900 g soluție H2SO4