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How to distinguish between NaHSO4 and Na2SO4 in lab using these reactants?

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sharbeldam:
How to distinguish between NaHSO4 and Na2SO4 in lab using these reactants in this table?

I looked up every reaction online, nothing helps!! please give me a hint.

we can only use our eyes to know the difference between the two colorless tubes using these reactants in table.

for instance if i use bacl2 , they will both form white percipitate which doesnt help...etc.

chenbeier:
What do you know about to detect sulfates?

You found BaCl2. Great. So you know  both are sulfates.

What does it mean if a salt contain hydrogenatoms regarding pH?
Which of the substances could be used if something is acidic?

Answer this questions, by the way we do not solve homeworks, without your own atempt.

sharbeldam:
they both contain sulfates tho so bacl2 wont work as i mentioned. This is not homework sir, i know the site rules, Im trying to help someone solving this question, i gave my try for the first reactant, i tried to see the products of them all.

I dont want you to solve anything for me, thanks

chenbeier:
I changed a little bit the answer above. But anyway, why the other one dont do the work by him/her self.

sharbeldam:
I dont understand, what is the problem of me helping someone? i spend most of my time helping people and sometimes i get help from this great site.

we can only use eyes, so indicators dont work, for instance if i use NaOH, both solution will stay colorless.

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