A 56.3-mL sample of 0.225 M HNO3 is titrated with 0.156 M KOH. a. Calculate the volume of base required (in mL) to reach the equivalence point. b. Calculate the pH after adding 98.5 mL of KOH
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Which of the following equilibrium constant indicates the reactant-favored reaction? Select one: a.Keq = 1 b.Keq = 1.3 c.Keq = 5 x 10-4 d.Keq = 1 x 102 e.Keq = 10
Equilibrium constant:For a reversible reaction it is the ratio of concentration of product and concentration of reactant. Keq=[Products]/[Reactant] For equilibrium reaction Keq =1 Thus ,[products]=[Reactants] For reactant favour reaction ,Keq<1 For product favour reaction, Keq>1
A stock solution of HNO 3 is prepared and found to contain 14.9 M of HNO 3. If 25.0 mL of the stock solution is diluted to a final volume of 0.500 L, the concentration of the diluted solution is ________ M.
Stock solution concentration (S1)=14.9M Stock solution volume (V1)=25ml Diluted solution volume (v2)=0.5L =.5×1000ml =500ml so S2=? we use the formula, V1S1=V2S2 S2=(V1S1)/V2 = (25×14.9)/500 =0.745M the concentration of the diluted solution is 0.745 M.
crossed cannizaro reaction,benzaldehyde(C6H5CHO) react with formaldehyde (HCHO) in 50%NaoH
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Cannizaro reaction: Related question; DCC Reagent(dicyclohexylcarbodiimide) Toluene 1)Oxidation with kmno4 mechanism 2)Benzoic acid (C6H5cooH)+Socl2 3)Benzoyl chloride (C6H5Cocl) +LiAlH[ (OC (CH3)3]/H+ 4)Benzaldehyde (C6H5CHo)+CH2OHCH2OH/H+ a)Ethyl acetoacetate(CH3COCH2COOCH2CH3) reactions with 1)NaoEt 2)CH3CH2Br 3)NaOH/H2o 4)H3o+ b)2Ethyl acetate (2CH3COOEt) reaction with NaOEt/H3o+ c)Diethyl malonate (CH2 (COOEt)2 )reaction with 1)NaoEt 2) CH3CH2Br 3)H3O+ Toluene(Ph CH3) reaxts with1) NBS/hv,2)Pph3,Buli and 3)Acetone
Moffut oxidation #oxidation of alcohol by DCC #Dcc reagent
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Definition muffet oxidation is the oxidation of alcohol by DCC reagent in dmso solvent. DCC reagent is a mild oxidizing agent which convert primary alcohol to aldehyde and secondary alcohol to ketone. Related questions 1. oxidation of of alcohol 2. oxidizing agent in organic compound 3. identification of degree of alcohol 4. Toluene 1)Oxidation with kmno4 mechanism 2)Benzoic acid (C6H5cooH)+Socl2 3)Benzoyl chloride (C6H5Cocl) +LiAlH[ (OC (CH3)3]/H+ 4)Benzaldehyde (C6H5CHo)+CH2OHCH2OH/H+ 5. Tributyltin tin hydride(Bu3SnH) preparation,reduction of alkyl halide ,nitro group,AIBN structure
Toluene 1)Oxidation with kmno4 mechanism 2)Benzoic acid (C6H5cooH)+Socl2 3)Benzoyl chloride (C6H5Cocl) +LiAlH[ (OC (CH3)3]/H+ 4)Benzaldehyde (C6H5CHo)+CH2OHCH2OH/H+
Toluene 1)Oxidation with kmno4 mechanism 2)Benzoic acid (C6H5cooH)+Socl2 3)Benzoyl chloride (C6H5Cocl) +LiAlH[ (OC (CH3)3]/H+ 4)Benzaldehyde (C6H5CHo)+CH2OHCH2OH/H+
Calculate the pH of the solution when 50 ml 0.5 M Barium hydroxide react with 80 ml o.5 M sulphuric acid (H2So4)?
Q.Calculate the pH of the solution when 50 ml 0.5 M Barium hydroxide react with 80 ml o.5 M sulphuric acid (H2So4)?
Calculate the pH for the cell at 25°C-pt (s)|H2 (g,1bar)|H+(pH=?)||AgCl (s),Ag (s)|Cl-(aq,1M).Given Ecell=0.245v
Q.Calculate the pH for the cell at 25°C- pt (s)|H2 (g,1bar)|H+(pH=?)||AgCl (s),Ag (s)|Cl-(aq,1M).Given Ecell=0.245v
Calculate the gibbs free energy change (dG°) and equlibrium constant (Keq) at 25°c for the reaction - Cu (s)+I 2 (s)-------> Cu 2+ (aq) +2I -(aq).Given E°Cu 2+/Cu=0.34 v and E°I 2/I- =0.54 v.
Q.Calculate the gibbs free energy change (dG°) and equlibrium constant (Keq) at 25°c for the reaction - Cu (s)+I 2 (s)-------> Cu 2+ (aq) +2I -(aq).Given E°Cu 2+/Cu=0.34 v and E°I 2/I- =0.54 v.
Calculate the pH of 0.012 g of HNO3 in 500 ml solution?
Q.Calculate the pH of 0.012 g of HNO3 in 500 ml solution?
Calculate the pH of a mixture of 2 g chlorous acid and 3 g sodium chlorite solution? Given pka of chlorous acid=1.94
Q.Calculate the pH of a mixture of 2 g chlorous acid and 3 g sodium chlorite solution? Given pka of chlorous acid=1.94
Activity coefficient calculation example ,Debye-Huckel equation,ionic strength determination
Activity coefficient of any species is the ratio of chemical activity to its molar concentration.
Mole Number/Avogardo number
The number of particles in 1 mole is known as mole number . The number is 6.023×10^23 .This number is called Avogardo number .