Question

please help me to solve this step by step 5-8 thank you!

5. (0.25 p each) Classify the following compounds as soluble or insoluble in water NaBr: AIPO. BaSO: COS: Ca(OH)2: LIOH: 6. (0.25 p each) What is the oxidation number of the indicated species in the following compounds? (Assigning Oxidation Numbers 101) Sulfur in KS: Chlorine in Cl: Phosphorous in H,PO.: Hydrogen in H0 Sulfur in SO, lodine in KIO: 7. (0.25 p each) Identify the different species in the following chemical equation: 2Na(s) + Mg(aq) - 2Na(aq) + Mg(s) Oxidized species: Reduced species: Oxidizing agent: Reducing agent: 8.(1 p) What is the molarity of the solution that was prepared by dissolving 3.5 moles of NaCl to a final volume of 5.0 L? (Conversions with Molarity 101)

Answer 1

based on the solubility rules predict soluble in water or not

oxidation number are obtained based on the valency and the known values of atoms that are standard oxidation numbers

molarity is no of moles in solution

5). NaBr – Soluble Rasou - Insoluble Ca©H), - Soluble . (soughtly) Alpey - cos - lion - In souble In soluble soluble KpS = K = (+1) S = (2) Cl2 → a=(0) H3 Poy I H = (+1) P =C+5]0=> 62) H20 3 HP(+1), 0=(-2) 5027) S=(+4) ,o=(-2) KIO3 => K =(H) I = (45) 0 =(2) 7 ana + maat oant & Ma 0 G R Reduction a - oxidised =) Na Reduced =) Mgat congeut => my gf Loxidation Ripreut ) Na 9) Mobacily a molestie -> 3,500) = 0.7M] DOO