Question

What is the concentration of hydrogen ions in 0.05mol/dm³ of sulphuric acid ?

Answer 1

0.05mol H2SO4/dm^3 * 2mol H+/mol H2SO4 * 1g H+/mol H+ = 0.10g/dm^3 

It's just a matter of converting units. For every mole of sulfuric acid, there are 2 moles of hydrogen ions, and for every mole of hydrogen ions, there is one gram of hydrogen ions.

Answer 2

The concentration of hydrogen ions in 0.05 mol/dm³ of sulphuric acid is 0.1 mol/dm³

Explanation:

The dissociation reaction for sulphuric acid is:

$H_2SO_4\rightarrow 2H^++SO_4^{2-}$

According to stoichiometry,  

1 mole of $H_2SO_4$ gives 2 mole of $H^+$  

Thus 0.05 moles of $H_2SO_4$ gives =$\frac{2}{1}\times 0.05=0.1$ moles of $H^+$  

Putting in the values:

$[H^+]=\frac{moles}{Volume}=\frac{0.1moles}{1dm^3}=0.1mol/dm^3$

Learn More about concentration

https://brainly.com/question/12200689

#learnwithbrainly