ro = ms/V
ms = 271,6*1,841 = 500 g soluție H2SO4
c = md/ms * 100
md = 500*98/100 = 490 g acid sulfuric
2 NaCl + H2SO4 = 2 HCl + Na2SO4
M H2SO4 = 2*1+32+4*16 = 98
M HCl = 1+35,5 = 36,5
98 g acid sulfuric........2 moli HCl
490 g acid sulfuric...............x
x = 10 moli HCl
n = m/M
m = 10*36,5 = 365 g HCl