Home > Chemistry > Double Replacement Reactions

What reagent can be used to test for the presence of sulfate ions ?

Answer 1

Caleb Adams

Barium chloride solution can be used.

Since barium sulfate is soluble, it precipitates:

#CuSO_(4(aq))+BaCl_(2(aq))rarrBaSO_(4(s))+CuCl_(2(aq)#

Leaving out the spectator ions:

#Ba_((aq))^(2+)+SO_(4(aq))^(2-)rarrBaSO_(4(s))#

By signing up, you agree to our Terms of Service and Privacy Policy

Answer 2

Wyatt Atkins

A white precipitate of barium sulfate (BaSO4) can be produced by applying a barium chloride (BaCl2) solution to detect the presence of sulfate ions (SO4^2-).

By signing up, you agree to our Terms of Service and Privacy Policy

Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.