# chemistry help

posted by .

sulfuric acid is a strong acid and dissociates in water as shown in reaction
H2SO4(aq)=2H^+(aq)+SO4^2-(aq)
what is the hydrogen ion concentration, in mol dm^-3,when 1.50g of sulfuric acid is dissolved in water to give 0.500dm^3 of solution ?show all of your working and give your answer to three significant figures.

• chemistry help -

Hello zak. What level is this course? If you want an approximate answer, and from the ionization equation in the problem I think that is what you want, it is as follows:
mols H2SO4 = 1.50g/molar mass H2SO4 = about 0.015 but you need to be more accurate.
mols H^+ = twice that (from two hydrogen ions/molecule)= ?.
Then (H) in M = mols/L = ?/0.500 = xx?.

In reality it is less than that because H2SO4 is not a strong acid EXCEPT for the first ionization; i.e., the second ionization has a k2 = about 0.012. If you take that into account (H^+) = about 0.04M instead of about 0.06M.

## Similar Questions

1. ### chem

which one of the following statements about sulfuric acid is correct?
2. ### Chemistry

H20SO4(aq)-> 2H+(aq) + SO4 2- (a) Calculate the hydrogen ion concentration (in mol 1-1) in this solution. Show steps and explain your reasoning Also what is the pH of the sulfuric acid solution nearet whole number You don't have …
3. ### Chemistry Help.......

Sulfuric Acid (H2SO4) is a strong acid, which dissociates when dissolved in water according to the following equation: H20SO4(aq)-> 2H+(aq) + SO4 2- (a) A 0.21g sample of sulfuric acid is dissolved completely in sufficiebt water …
4. ### Chemistry

Sulfuric acid (H2SO4) is a very strong diprotic acid. If 0.065 moles of sulfuric acid is mixed with water to make 456 mililiter of solution, what is the molarity of H+?
5. ### chemistry

Sulfuric acid (H2SO4) is a very strong diprotic acid. If 0.062 moles of sulfuric acid is mixed with water to make 200 mililiter of solution, what is the molarity of H+?
6. ### AP Chemistry

Sulfuric acid (H2SO4) is a very strong diprotic acid. If 0.036 moles of sulfuric acid is mixed with water to make 576 mililiter of solution, what is the molarity of H+?
7. ### chemistry

Sulfuric acid is a strong acid and dissociates in water as shown in Reaction 4. Equation label: (4) Help Please!!!! H2SO4(aq) = 2H+(aq) + SO42-(aq) What is the hydrogen ion concentration, in mol dm−3, when 1.50 g of sulfuric …
8. ### CHEMISTRY

Help Please!!!! H2SO4(aq) = 2H+(aq) + SO42-(aq) What is the hydrogen ion concentration, in mol dm−3, when 1.50 g of sulfuric acid is dissolved in water to give 0.500 dm3 of solution
9. ### Chemistry

What is the hydrogen ion concentration, in mol dm−3, when 2.00 g of sulfuric acid is dissolved in water to give 0.400 dm3 of solution?
10. ### chemistry

What is the hydrogen ion concentration, in mol dm−3, when 2.00 g of sulfuric acid is dissolved in water to give 0.400 dm3 of solution?

More Similar Questions