Polyprotic Acids

[ulbasour]

Stumbled across this question:

A diprotic acid is in the from H₂X, and is added to Na₂CO₃. Write a balance equn.

I get

H₂X + Na₂CO₃ ------ Na₂X + H₂O + CO₂.

However, since its a diprotic acid, wouldn't the mole ratio have to be 1: 2?

[nacho]

nope, your equation is correct
i think sodium carbonate is a di-base(if that makes sense)
as in,
sodium carbonate + hcl, fr 1 mol of sodium carbonate, you need two mols of HCl

[mickeymouse]

I thought the ratio was 1:1...

[ulbasour]

nope, your equation is correct
i think sodium carbonate is a di-base(if that makes sense)
as in,
sodium carbonate + hcl, fr 1 mol of sodium carbonate, you need two mols of HCl

Ah yes that makes sense then

I thought the ratio was 1:1...

Depending on how many H atoms can be donated, the mole ratio changes:
I.e. Sulfuric acid and NaOH when reacting shall have a mole ratio of 1:2, because Sulfuric acid is diprotic (can donate 2 H atoms)

[mickeymouse]

oh okay so is the answer to that question a ratio of 1:2?