3. When aqueous solutions of sodium phosphate (Na3PO4) and chromium(III) chloride (CrCl3) react, chromium(III) phosphate forms as a precipitate.
Identify the spectator ions and write a balanced net ionic
equation for this reaction.

The ions Cr3+ and PO,?-combine to form the precipitate.
Which two ions are spectator ions?

The net ionic reaction is Cr3+ + PO42 ..

The four ionic species initially in solution are Na⁺, PO₄³⁻, Cr³⁺, and Cl⁻. Since the precipitate is composed of Cr³⁺ and PO₄³⁻ ions, the spectator ions must be Na⁺ and Cl⁻.

The complete ionic equation is 3Na⁺(aq) + PO₄³⁻(aq) + Cr₃⁺(aq) + 3Cl⁻(aq) → 3Na⁺(aq) + 3Cl⁻(aq) + CrPO₄(s).

So the balanced net ionic equation for this reaction would be Cr³⁺(aq) + PO₄³⁻(aq) → CrPO₄(s).

Answers:

Which two ions are Spectator Ions?

Na+

Cl-

The net ionic reaction is Cr2+PO42...

Cr2(PO4)3

i would say b

explanation:

but i think i would need more information than that

substituting a hydrogen atom with a halogen in a hydrocarbon:

- the single bond remains single. a is wrong.

- the bond with hydrogen is as strong as with a halogen. c is wrong

- a hydrocarbon is saturated if there is no double bond. we do not know that so d is wrong.

- carbon will always have four valence electrons. e is wrong.

by elimination, the correct answer is b. the boiling point of the new compound increases.