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WORKSHEET 10 Name________________________ last first CHEMISTRY 110 Problem sets are due within the first five minutes of lecture on the due date. 1) Indicate which of the following compounds are soluble salts by placing an "X" in the blank space that the right. ferrous hydroxide________ ammonium bromate____X____ sodium dihydrogen phosphate___X___ potassium cyanide____X____ lithium sulfate___X_____ barium phosphate________ nitrous acid________ aqueous ammonia________ manganese (II) acetate____X____ C2H6O________ silver chloride________ sodium carbonate____X____ zinc carbonate________ cobalt (II) sulfite________ 2) Circle those compounds which are weak acids in water HI HC6H5O2 HNO2 H2SO4 HF H2S HClO Co(OH)2 Ca(OH)2 3) Circle those compounds which are soluble hydroxides in water Mg(OH)2 LiOH Al(OH)3 KOH 4) List the chemical formulas of the following compounds that are strong electrolytes potassium sulfate nitrous acid barium phosphate hydrofluoric acid nitric acid zinc chloride lead (II) acetate aqueous ammonia C12H22O11(aq) sodium carbonate CH3OH(aq) ammonium chlorate dichromic acid lithium cyanide potassium hydrogen phosphate K2SO4, Pb(C2H3O2)2, Na2CO3, HNO3, LiCN, NH4ClO3, K2HPO4, ZnCl2 __________________________________________________________________________ 5)List the chemical formulas for the compounds from question 4 that are weak electrolytes HF, H2Cr2O7, HNO2, NH3(aq) _______________________________________________________________________________________ 6)List the chemical formulas for the compounds from question 4 that are nonelectrolytes CH3OH, Ba3(PO4)2, C12H22O11 _______________________________________________________________________________________ 3/30/2011 B 7) Indicate which are the most abundant particle, ions or molecules for aqueous solutions of the following compounds. Write the predominant species in the space at the right. molecules ions Solution Inventory (formulas of ions) _______ ____X___ Mg2+(aq) + 2C2H3O2-(aq) ___X____ _______ C2H6O(aq) potassium iodide _______ ____X___ K+(aq) + I-(aq) sodium hydroxide _______ ____X___ Na+(aq) + OH-(aq) acetic acid ___X____ _______ HC2H3O2(aq) ammonia ___X____ _______ NH3(aq) lithium sulfide _______ ____X___ 2Li+(aq) + S2-(aq) nickel (III) nitrate _______ ____X___ Ni3+(aq) + 3NO3-(aq) ___X____ _______ HCHO2(aq) ammonium sulfate _______ ____X___ 2NH4+(aq) + SO42-(aq) lithium oxalate _______ ____X___ 2Li+(aq) + C2O42-(aq) perchloric acid _______ ____X___ H+(aq) + ClO4-(aq) magnesium acetate C2H6O(aq) HCHO2(aq) 3/30/2011 B
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