chemica and smng bases, aohalts of weak acids and strong bases, (G)sals f ses, s

Question

chemica and smng bases, aohalts of weak acids and strong bases, (G)sals f ses, salts of weak acids and strong bases, 3) (s)+ Cu* acids and weak bases, 4)salts of weak acids and weak bases. 2 Write down the appropriate hydrolytic reaction of sodium acetate. Zn2 (aq) and der standard con Calculate the hydrolytic constant Kh of sodium acetate at 25°c, i K,-1.01 x10-14 and Ka1.75x10. Find the degree of hydrolysis for a 0.02 molar solution of sodium acetate t 2soc e mole of an i 12%) ng cycle, all step 2. isobaric tem Reactants A and B are placed in a reaction vessel at zero time, where the cycle on a P-T assuming C-3/ CA0 CBo.The following reactions occur at constant volume A+M-D where M is the desired product, If both reactions are second-order, derive expression for the selectivity of M with respect to D in terms of the total car 3 ( 14%) 0.15mol 0.15(m version of B. 1000H2O Tue overall rate expression of reaction 2 NO + 2H2 Nt2Ha0isw

Explanation / Answer

sodium acetate is conjugate base of acetic acid.

hence Kb= 1.01*10-14./1.75*10-5= 5.714*10-10

acetate ion of sodium acetate undergoes ionization as CH3COO- + H2O ---------->CH3COOH+ OH-

Kb= [CH3COOH] [OH-]/ [CH3COO-]

let x= drop in concentration of acetate ion to reach equilibrium. At Equilibrium

[CH3COO-] =0.02-x, [OH-]= [CH3COOH]=x

hence x2/(0.02-x)= 5.714*10-10

when solved for x using excel, x= 3.38*10-6, pOH= -log (x)= 5.47, pH= 14-5.47= 8.53

for the reaction A+B------->M, dM/dt= K1[A] [B] - K2[A] [M], for the reaction A+M------>D, dD/dt= K2[A][M]

dM/dt/ (dD/dt)= K1[A] [B]- K2[A] [M]/ K2[A] [M]= K1 [B]/K2[M]-1

B= [Bo]*(-1XB), Bo= initial concentration of B, XB= conversion of B

dM/dt/ (dD/dt)= K1[B]o*(1-XB)/(K2*M)- 1

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