APM-Intr 1a2017te @ 2016.pdf handout handout Video As: CEM1A1( 1IN-1 11 lINEE 1-

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APM-Intr 1a2017te @ 2016.pdf handout handout Video As: CEM1A1( 1IN-1 11 lINEE 1-1 INEEA1_1CEM"X + O file:///C:/Users/Murafhi/Desktop/CEM1A10%20%20EXP%20AS%20ANSWER%20SHEET%202018.pdf 1 of S ASSIGNMENT2 Answer ALL the questions on separate lined paper and attach your answers to this report. 2.1 Predict whether the following ionic solids are soluble or insoluble in water (a) BaCO (b) Ag2CrO+ (c) LiOH (d) Na2SO (e) MgC-O4 2.2 Write a balanced molecular equation for the following reaction that occurs in an aqueous medium: strontium hydroxide and lithium phosphate 2.3 How will you determine whether a given solution contains Pb and/or Ag ions by (a ng the formation of complexes and (b) wthout any complex formation occurring? 2.4 Three reagent bottles, labelled A, B and C, are each known to contain one of the following 0.1 M aqueous solutions: lead(I) nitrate, copper(ll) sulfate and lithium chloride. All the solutions were separately tested with an aqueous silver nitrate solution and an ammonia solution. The results are below in tabular form

Explanation / Answer

2.1 and:-

(a) BaCO3 is insoluble in water , but BaCO3 is soluble in acids except sulphuric acid.

(b) Ag2CrO4 is insoluble in water ( or sparangly soluble in water) .

(c) LiOH is Strong acid , therefore it is soluble in water.

(d) Na2SO4 is soluble in water , because Na2SO4 is a strong electrolyte , therefore it is completely dissociated into ions in aqueous solution.

(e) MgC2O4 is insoluble or sparangly soluble in water .

Note:- all strong acids and strong bases are also strong electrolytes.

The smallest amount of sparangly soluble salts which is soluble in water , gets 100% dissociated into ions , therefore we can easily calculated their solubility products i.e Ksp value.

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