Question

determina masa sarii ce se obtine in baza reactiei dintre 3mol de acid clorhidric cu hidroxil de sodiu​

Answer 1

Răspuns:

Explicație:

HCl + NaOH = NaCl + H2O

1 mol  HCl.................1 mol NaCl

3 moli HCl...................x = 3 moli NaCl

M NaCl = 58,5 g/mol

m = 3*58,5 = 175,5 g

Answer 2

Răspuns:

MHCl=1+35,5=36,5g/mol

MNaCl=23+35,5=58,5g/mol

n=m/M

m=n×M=3×36,5=109,5g HCl

36,5g..................58,5g

HCl + NaOH → NaCl + H2O

106,5g.................xg

x=109,5×58,5/36,5=175,5g NaCl

caluclam in moli

1 mol  .................1 mol

HCl + NaOH → NaCl + H2O

3 moli ...................y moliNaCl

y=3×1/1=3moli NaCl

Explicație: