Question

question 2 (2 points)
which of the following compounds is not soluble in water?
○li₂s
○pbcl₂
○k₂co₃
○hg(no₃)₂
○nh₄oh

Explanation:

Lithium sulfide ($Li_2S$) is soluble as lithium salts are generally soluble. Potassium carbonate ($K_2CO_3$) is soluble because most potassium - containing compounds are soluble. Mercury(II) nitrate ($Hg(NO_3)_2$) is soluble since all nitrates are soluble. Ammonium hydroxide ($NH_4OH$) is soluble as ammonium - containing compounds are soluble. Lead(II) chloride ($PbCl_2$) is insoluble in cold water and only slightly soluble in hot water.

Answer:

PbCl₂