Question

1. directions

choose the correct answer for each row.
for each compound, indicate whether it would \form a precipitate\ or
emain dissolved\ if produced in a potential aqueous reaction.

	forms a precipitate	remains dissolved
$nano_3$	$\bigcirc$	$\bigcirc$
$baso_4$	$\bigcirc$	$\bigcirc$
$k_2so_4$	$\bigcirc$	$\bigcirc$
$pbi_2$	$\bigcirc$	$\bigcirc$

Explanation:

• Silver chloride ($AgCl$) is an insoluble halide salt in water, so it forms a precipitate.
• All nitrate salts (including $NaNO_3$) are soluble in water, so it remains dissolved.
• Barium sulfate ($BaSO_4$) is one of the few insoluble sulfate salts, so it forms a precipitate.
• Salts containing group 1 metals (like $K^+$ in $K_2SO_4$) are soluble in water, so it remains dissolved.
• Lead(II) iodide ($PbI_2$) is an insoluble halide salt in water, so it forms a precipitate.

Answer:

1. $AgCl$: Forms a Precipitate
2. $NaNO_3$: Remains Dissolved
3. $BaSO_4$: Forms a Precipitate
4. $K_2SO_4$: Remains Dissolved
5. $PbI_2$: Forms a Precipitate