How Do You Calculate the Moles of H₂SO₄ Needed for a Reaction?

[Adheesha]

TL;DR Summary: Question about molarity and concconcentration

25 cm^(3) of NaOH solution with the molarity of 0.1moldm^(-3) Was measured to a pipette and added to a volumetric flask. Then by adding distilled water to the solution, the solution is diluted until the total volume is 250cm^(3) Find the number of moles of H₂SO required to react with 30.0cm(3) of the solution thus made.

 

[Mayhem]

What is your own attempt?

 

[Adheesha]

What is your own attempt?

0.0003 mol

What is your own attempt?

 

[Adheesha]

TL;DR Summary: Question about molarity and concconcentration

25 cm^(3) of NaOH solution with the molarity of 0.1moldm^(-3) Was measured to a pipette and added to a volumetric flask. Then by adding distilled water to the solution, the solution is diluted until the total volume is 250cm^(3) Find the number of moles of H₂SO required to react with 30.0cm(3) of the solution thus made.

The answer I got is 0.0003 mol.I just wanna know whether it's correct or not cuz I'm not sure about my answer

 

[Borek]

Assuming you meant H₂SO₄ - does it react 1:1 with NaOH?

 

[Adheesha]

Assuming you meant H₂SO₄ - does it react 1:1 with NaOH?

NO.It reacts 1:2 with NaOH

 

[Borek]

Have you accounted for that?

 

[Adheesha]

Assuming you meant H₂SO₄ - does it react 1:1 with NaOH?

NO.It reacts 1:2 with NaO

Have you accounted for that?

I tried to solve the question and the answer I got was 0.0003 moles.can anybody tell me whether it's correct or not?

 

[Borek]

No, it is not correct, and I already pointed you to a reason why it is wrong.

Write reaction equation, calculate number of moles of NaOH, use the stoichiometry to calculate number of moles of H₂SO₄.

 

[Adheesha]

No, it is not correct, and I already pointed you to a reason why it is wrong.

Write reaction equation, calculate number of moles of NaOH, use the stoichiometry to calculate number of moles of H₂SO₄.

Ok thank you