Chemactivity 42key PDF

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Lab answers for activity 42...

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ChemAct i vi t y42CTQ 1 . a )( 1 )HCl ( 2 )n o n e ( 3 )HCN b )( 1)n o n e ( 2 )NH3 ( 3 )n o n e c )( 1 )HCl ( 2 )H2O ( 3 )HCN d )( 1 )H2O ( 2)NH3 ( 3 )H2O 2 . H2O r e a c t sa sa na c i di n( 2 ) ;H2O r e a c t sa saba s ei n( 1 ) .Iu s e dt h eBr o n s t e d Lo wr y d e fin i t i on . 3 . HCl , Kci smuc hl a r g e r —t h er e a c t i o np r o c e e d sf ur t h e rt ot her i g h t . – b 4 . a )Cl )Asab a s e . c )H3O+ d )Asa na c i d . e )I n( 2 ) ,NH3i saba s ea ndNH4+ i sa na c i d .I n( 3 ) ,HCN i sa na c i da n dCN–i sab a s e .Wh e na na c i dl os e sap r o t on ,t he s p e c i e st ha tr e ma i n si sab a s e . 5 . Wh e nne u t r a lH2Sl o s e sap r ot o nt h er e ma i n i n gpo r t i onwi l lb ec h a r g e d– 1 ,HS–. H2S( a q )+H2O = H3O+( a q ) + HS–( a q )

6 . CO32–( a q )+ H2O = OH–( a q ) + HCO3–( a q ) 7. a)NH + b)OH– 4 ChemAct i vi t y42Exer ci ses 1 . SO42–;CO32–;OH–;O2–;H2O;NH3;CH3NH2;F–;CH3COO–. 2 . HSO4–;HCO3–;H3O+; H2O;OH–;NH4+; CH3NH3+;HCN ;CH3COOH ;HF; H2CO3;NH3. )H2O,H2O,H2O,CO32–,NH3 3 . a )H2SO4,HSO4–,H2O,HCN ,H2S b c )H2SO4a n dHSO4–;H3O+a n dH2O. HSO4–a n dSO42–;H3O+a n dH2 O. + – – – 2 – H3O a ndH2O;H2O. a ndOH . HCNa n dCN ;HCO3 a n dCO3 . H2Sa n dHS–;NH4+a n dNH3. 4 . a )NH4+ b )NH2– c )NH3( l )+ NH3( l )=NH4+( a m)+ NH2–( a m) 5 . Ac i d Ba s e – H2S HS – S2– HS HNO2 NO2– H3PO4 H2 PO4– HOCN H3O+

OCN– H2 O

OH– HF

O2– F– HPO42–

H2PO4– HOCl

– OCl...