CHEM 1201 Section 03 Quiz #2 Form 6 Chapters 4 &6 Instructions Please bubble in
ID: 570062 • Letter: C
Question
CHEM 1201 Section 03 Quiz #2 Form 6 Chapters 4 &6 Instructions Please bubble in Number block form number 6 in the Grade or Education block under the Identification block on the back of your Scantron sheet before you begin this quiz. 1. Choose the solubility statement from below which is correct. a) The ionic compound with the formula PbCl2 is soluble in water. b) The ionic compound with the formula Srs is insoluble in water. c) The ionic compound with the formula Sriz is insoluble in water. d) The ionic compound with the formula Hg2Cl2 is soluble in water. e) The ionic compound with the formula Pbl4 is soluble in water.Explanation / Answer
We have to know solubility rules , otherwise its difficult to say
Solubility Rules
All salts of the group I elements (alkali metals = Na, Li, K, Cs, Rb) are soluble.
NO3- - All nitrates are soluble.
Chlorate (ClO3-), perchlorate (ClO4-), and acetate (CH3COO- or C2H3O2-, abbreviated as Oac-) salts are soluble.
Cl-, Br-, I- - All chlorides, bromides, and iodides are soluble except those of silver, mercury, and lead (e.g., AgCl,
Hg2Cl2, and PbCl2).
SO42- - Most sulfates are soluble.
Exceptions include BaSO4, PbSO4, Hg2SO4 and SrSO4
CO32- - All carbonates are insoluble except NH4+ and those of the Group 1 elements.
OH- - All hydroxides are insoluble except those of the Group 1 elements, Ba(OH)2, and Sr(OH)2. Ca(OH)2 is slightly
soluble.
S2- - All sulfides are insoluble except those of the Group 1 and Group 2 elements and NH4+.
from the rules, option (c) is correct.