n= 0,04 mola
V= 500 cm3= 0,5 dm3
Cm= n÷V= 0,04÷0,5 dm3= 0,08 mol/dm3
HCl ----> H+ + Cl-
1 mol HCl ------ 1 mol H+
0,08 mola HCl ----- x moli H+
x= 0,08 mola H+
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n= 0,04 mola
V= 500 cm3= 0,5 dm3
Cm= n÷V= 0,04÷0,5 dm3= 0,08 mol/dm3
HCl ----> H+ + Cl-
1 mol HCl ------ 1 mol H+
0,08 mola HCl ----- x moli H+
x= 0,08 mola H+