Question

Stabileste capacitatea de acid clorhidric in g , mol si numar de molecule care se obtine prin reactia clorulei de sodiu cu 200g solutie de acid sulfuric de C=80%

Answer 1

2 NaCl + H2SO4 = Na2SO4 + 2 HCl
c = md/ms*100
md = 200*80/100 = 160 g H2SO4
M H2SO4 = 2*1+32+4*16 = 98
M HCl = 1+35,5 = 36,5
98 g H2SO4......2*36,5 g HCl
160 g H2SO4..............x
x = 119,18 g HCl
n = m/M = 119,18/36,5 = 3,265 moli HCl
nr molecule = n*6,022*10^23 = 3,265*6,022*10^23 = 19,661*10^23 molecule