Write the formulas for the following substances as they would appear in a total ionic equation:

a) Aqueous acetic acid
b) solid lithium carbonate
c) Aqueous ammonia
d) Aqueous sodium dihydrogen phosphate

I don't know, do we have to write the formula [like ammonia is NH3] Or something else. PLEASE HELP ME with at least 2 or 3 of them. THANX!!

It isn't exactly clear but I assume what the problem is asking is for you to know how to display the formula in net ionic equations. Remember when converting a molecular equation to a net ionic equation you write

1. gases as molecules.
2. insoluble substances as molecules.
3. Weak electrolytes as molecules.
4. Everything else as ions.
Is that what you think? In answer to the NH3 question, yes, you write aq NH3 as NH3 since it is a weak base.
NaH2PO4 would be written as the ions; i.e., Na+ + H2PO4^-

yeah i get that, and so what would you write acetic acid as, just the same??

And also thanx for explaining above

Acetic acid is a weak acid; we would write that as CH3COOH if we have the problem figures out right.

To write the formulas for the substances in a total ionic equation, you need to represent them using their chemical formulas. Here are the formulas for the substances you mentioned:

a) Aqueous acetic acid: Acetic acid is represented by the chemical formula CH3COOH.

b) Solid lithium carbonate: Lithium carbonate is represented by the chemical formula Li2CO3. Please note that when solids are written in a total ionic equation, they don't separate into ions.

c) Aqueous ammonia: Ammonia is represented by the chemical formula NH3. In an aqueous solution, it can exist as NH4OH, although it exists mostly as NH3(g) dissolved in water. However, in a total ionic equation, it is usually written as NH4+ and OH-.

d) Aqueous sodium dihydrogen phosphate: Sodium dihydrogen phosphate is represented by the chemical formula NaH2PO4. In an aqueous solution, it dissociates into Na+ and H2PO4- ions. However, in a total ionic equation, only ions are represented, so it would be written as Na+ and H2PO4-.