Chapter 7 – Equilibrium
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H3A is a weak triprotic acid (Ka1=10^−5, Ka2 = 10^−9, Ka3 = 10^−13 What is the value of pX of 0.1 M H3A (aq.) solution ? Where pX=-log X and X=[A^3−]/[HA^2−]
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Nov
H3A is a weak triprotic acid (Ka1=10^−5, Ka2 = 10^−9, Ka3 = 10^−13 What is the value of pX of 0.1 M H3A (aq.) solution ? Where pX=-log X and X=[A^3−]/[HA^2−] H3A is a weak triprotic acid (Ka1=10^−5 Ka2 = 10^−9 Ka3 = 10^−13 What is the value of pX of 0.1 M H3A (aq.) [...]
If first dissociation of X(OH)3 is 100% whereas second dissociation is 50% and third dissociation is negligible then the pH of 4×10^−3 M X(OH)3 is :
18
Nov
If first dissociation of X(OH)3 is 100% whereas second dissociation is 50% and third dissociation is negligible then the pH of 4×10^−3 M X(OH)3 is : If first dissociation of X(OH)3 is 100% whereas second dissociation is 50% and third dissociation is negligible then the pH of 4×10^−3 M X(OH)3 is : November [...]
Calculate the ratio of HCOO^− and F^− in a mixture of 0.2 M HCOOH (Ka = 2×10^−4 ) and 0.1 M HF (Ka = 6.6×10^−4 )
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Nov
Calculate the ratio of HCOO^− and F^− in a mixture of 0.2 M HCOOH (Ka = 2×10^−4 ) and 0.1 M HF (Ka = 6.6×10^−4 ) Calculate the ratio of HCOO^− and F^− in a mixture of 0.2 M HCOOH (Ka = 2×10^−4 ) and 0.1 M HF (Ka = 6.6×10^−4 ) November 18, 2020 [...]
What concentration of FCH2COOH, (Ka = 2.6 × 10^-3) is needed so that [H + ] = 2 × 10^-3 ?
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Nov
What concentration of FCH2COOH, (Ka = 2.6 × 10^-3) is needed so that [H + ] = 2 × 10^-3 ? (Ka = 2.6 × 10^-3) is needed so that [H + ] = 2 × 10^-3 ? What concentration of FCH2COOH November 18, 2020 Category: Chapter 6 - Ionic Equilibrium (Level 1 and Level [...]
To what volume of 10 litre of 0.5 M CH3COOH (Ka=1.8×10^−5) be diluted in order to double the hydroxide ion concentration :
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Nov
To what volume of 10 litre of 0.5 M CH3COOH (Ka=1.8×10^−5) be diluted in order to double the hydroxide ion concentration : To what volume of 10 litre of 0.5 M CH3COOH (Ka=1.8×10^−5) be diluted in order to double the hydroxide ion concentration : November 17, 2020 Category: Chapter 6 - Ionic Equilibrium (Level 1 [...]
20 mL of 0.1 M weak acid HA(Ka=10^−5) is mixed with solution of 10 mL of 0.3 M HCl and 10 mL. of 0.1 M NaOH. Find the value of [A−]/([HA]+[A^(-)])` in the resulting solution :
17
Nov
20 mL of 0.1 M weak acid HA(Ka=10^−5) is mixed with solution of 10 mL of 0.3 M HCl and 10 mL. of 0.1 M NaOH. Find the value of [A−]/([HA]+[A^(-)])` in the resulting solution : 20 mL of 0.1 M weak acid HA(Ka=10^−5) is mixed with solution of 10 mL of 0.3 M HCl [...]
Liquid NH3 dissociation to a slight extent, At a certain temp. its self dissociation constant KSDC(NH3)=10^−30. The number of NH+4 ions are present per 100 cm^(3)` of pure liquid are :
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Nov
Liquid NH3 dissociation to a slight extent, At a certain temp. its self dissociation constant KSDC(NH3)=10^−30. The number of NH+4 ions are present per 100 cm^(3)` of pure liquid are : At a certain temp. its self dissociation constant KSDC(NH3)=10^−30. The number of NH+4 ions are present per 100 cm^(3)` of pure liquid are : [...]
Equilibrium constant of T2O (T or 1H3 is an isotope of 1 H1 ) and H2O are different at 298 K. Let at 298 K pure T2O has pT (like pH) is 7.62. The pT of a solution prepared by adding 10 mL of 0.2 M TCl to 15 mL of 0.25 M NaOT is:
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Nov
Equilibrium constant of T2O (T or 1H3 is an isotope of 1 H1 ) and H2O are different at 298 K. Let at 298 K pure T2O has pT (like pH) is 7.62. The pT of a solution prepared by adding 10 mL of 0.2 M TCl to 15 mL of 0.25 M NaOT is: [...]
Consider the following statement and select correct option: (I) Ksp of Fe(OH)3 in aqueous solution is 3.8×10^−38 at 298 K. The concentration of Fe+ will increase when [H+] ion concentration decreases. (II) In a mixture of NH4Cl and NH4OH in water, a further amount of NH4Cl is added. The pH of the mixture will decreases. (III) An aqueous solution of each of the following salt (NH4I,HCOOK) will be basic, acidic respectively.
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Nov
Consider the following statement and select correct option: (I) Ksp of Fe(OH)3 in aqueous solution is 3.8×10^−38 at 298 K. The concentration of Fe+ will increase when [H+] ion concentration decreases. (II) In a mixture of NH4Cl and NH4OH in water, a further amount of NH4Cl is added. The pH of the mixture will decreases. [...]
What mass of Agl will dissolve in 1.0 L of 1.0 M NH3? Neglect change in conc. Of NH3. [Given: Ksp(AgI) = 1.5×10^−16), Kf[Ag(NH3)+2] = 1.6×10^7], (At. Mass Ag=108,1=127)
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Nov
What mass of Agl will dissolve in 1.0 L of 1.0 M NH3? Neglect change in conc. Of NH3. [Given: Ksp(AgI) = 1.5×10^−16), Kf[Ag(NH3)+2] = 1.6×10^7], (At. Mass Ag=108,1=127) (At. Mass Ag=108 1=127) Kf[Ag(NH3)+2] = 1.6×10^7] What mass of Agl will dissolve in 1.0 L of 1.0 M NH3? Neglect change in conc. Of NH3. [...]