All of these sentences are correct except :

keq0 takes in consideration the ionic strength

when there is an ionic strength , the molar conc. is not equal to the effective concentration

all of these sentences about activity coefficient are correct except :

the activity coefficient is more accurate in mixed electrolyte solution than in single one

( f =1 ) , for undissociated acid

f is a function of the total electrolyte concentration of the solution

the charge balance equation of 2 moles of Na2SO4 that is added into 1 L water is :

[Na+] + [H+] = [OH-] +2* [SO4-2]

One of these sentences is incorrect during adding a diverse salt to an aqueous solution :

an increase in the dissociation of a weak electrolyte

the diverse ion shields the ions of weak acid

the reaction " A + B <-------> 2C + D + Heat " will procced from right to left when :

sufficient conc. of C is present

The wrong sentence is :

the equilibrium constant give an idea about the rate of reaction how to fast

the larger keq of an acid , the stronger will be acid

keq value depends on the solvent of the rxn

The correct statement of the following is

Acidity increase as pka increase

Which of the following statements is not correct

A bronsted acid is an electron pair donor

A lewis base is an electron pair donor

The conjugate acid of NH3 is NH4+

Analytical Chemistry ( Second ) ❤️

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Pharmacgy

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Quizzes Created: 43 | Total Attempts: 37,948

Questions: 28 | Attempts: 141 | Updated: Mar 20, 2023

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Mar 20, 2023

Quiz Edited by
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Jul 14, 2019

Quiz Created by
Pharmacgy

Analytical Chemistry ( Second ) ❤️

All of these sentences are correct except :

All of these sentences about activity coefficient are correct except :

110^-4 M of a weak electrolyte AB , dissociates to A⁺ & B^- with k_eq⁰ = 210^-8 . calculate the % dissociation in the presence of 0.1 M diverse salt ( f_A = 0.6 , f_B= 0.7 )

In case of combination of 2 ionic species , the addition of diverse salt shifts the reaction to the left ( reactant باتجاه ال ) & decreases Complex's formation constant ( k_eq).

K_eq , pk_a , PH are independent on ionic strength for the reaction involving chared species

Calculate the precent dissociation for 0.09 M HCN

Calculate the PH of a solution of 510^-3 M C₆H₅COOH , k_a = 6.310^-5 in the presence of 0.05 M k₂SO₄ ( a_H = 9 Angstrom , a_C_6H5COO = 6 Angstrom )

It is based on the low of conservation and # of atom in the reaction is constant

The charge balance equation of 2 moles of Na₂SO₄ that is added into 1 L water is :

One of these sentences is incorrect during adding a diverse salt to an aqueous solution :

Calculate the ionic strength of 0.2 M solution of KNO₃ and 0.2 M of Al₂SO₃

Very weak acid dont contribute to the ionic strenght

Which of the following is stating that : " the rate of a chemical reaction is proportional to the active masses of the reacting substances present any time " :

The reaction " A + B <-------> 2C + D + Heat " will procced from right to left when :

One of the following does not affect neither k_eq nor the position of chemical reactions :

The wrong sentence is :

The conjugate base H₂PO^-₄is

The pH, POH, [OH^-] respectively 2*10^-5 HNO₃

The correct statement of the following is

Solution of. 01M HA has PH=2.8, the estimated Ka of the acid is

Which of the following statements is not correct

The self-ionization of a solvent to give cation and anion

The normal blood PH is 7.35-7.45 this value must be measured at

The PH of a solution prepared by mixing 2 ml of monoprotic strong acid of PH=3 and 3 ml of monohydroxy strong base of PH=10 is

The POH of 1*10^{-7 M solution of HCl is}

The ph of 0.1M solution of sodium acetate ( salt of weak acid ) NaOAC Kb = 5.7* 10^-10

The POH of a blood sample whose PH 7.4 at 37 C is : Kw at 37 C = 2.5 * 10^-14

The POH of a solution prepared by adding 25 ml of 0.1 M NaOH to 30 ml of 0.2 M acetic acid ( HOAC ) Ka = 1.75 * 10^{-5
is :}

Analytical Chemistry ( Second ) ❤️

All of these sentences are correct except :

All of these sentences about activity coefficient are correct except :

1*10-4 M of a weak electrolyte AB , dissociates to A+ & B- with keq0 = 2*10-8 . calculate the % dissociation in the presence of 0.1 M diverse salt ( fA = 0.6 , fB = 0.7 )

In case of combination of 2 ionic species , the addition of diverse salt shifts the reaction to the left ( reactant باتجاه ال ) & decreases Complex's formation constant ( keq).

Keq , pka , PH are independent on ionic strength for the reaction involving chared species

Calculate the precent dissociation for 0.09 M HCN

Calculate the PH of a solution of 5*10-3 M C6H5COOH , ka = 6.3*10-5 in the presence of 0.05 M k2SO4 ( aH = 9 Angstrom , aC6H5COO = 6 Angstrom )

It is based on the low of conservation and # of atom in the reaction is constant

The charge balance equation of 2 moles of Na2SO4 that is added into 1 L water is :

One of these sentences is incorrect during adding a diverse salt to an aqueous solution :

Calculate the ionic strength of 0.2 M solution of KNO3 and 0.2 M of Al2SO3

Very weak acid dont contribute to the ionic strenght

Which of the following is stating that : " the rate of a chemical reaction is proportional to the active masses of the reacting substances present any time " :

The reaction " A + B <-------> 2C + D + Heat " will procced from right to left when :

One of the following does not affect neither keq nor the position of chemical reactions :

The wrong sentence is :

The conjugate base H2PO-4 is

The pH, POH, [OH-​​​​​​] respectively 2*10-5 HNO3

The correct statement of the following is

Solution of. 01M HA has PH=2.8, the estimated Ka of the acid is

Which of the following statements is not correct

The self-ionization of a solvent to give cation and anion

The normal blood PH is 7.35-7.45 this value must be measured at

The PH of a solution prepared by mixing 2 ml of monoprotic strong acid of PH=3 and 3 ml of monohydroxy strong base of PH=10 is

The POH of 1*10-7 M solution of HCl is

The ph of 0.1M solution of sodium acetate ( salt of weak acid ) NaOAC Kb = 5.7* 10-10

The POH of a blood sample whose PH 7.4 at 37 C is : Kw at 37 C = 2.5 * 10-14

The POH of a solution prepared by adding 25 ml of 0.1 M NaOH to 30 ml of 0.2 M acetic acid ( HOAC ) Ka = 1.75 * 10-5 is :

110^-4 M of a weak electrolyte AB , dissociates to A⁺ & B^- with k_eq⁰ = 210^-8 . calculate the % dissociation in the presence of 0.1 M diverse salt ( f_A = 0.6 , f_B= 0.7 )

In case of combination of 2 ionic species , the addition of diverse salt shifts the reaction to the left ( reactant باتجاه ال ) & decreases Complex's formation constant ( k_eq).

K_eq , pk_a , PH are independent on ionic strength for the reaction involving chared species

Calculate the PH of a solution of 510^-3 M C₆H₅COOH , k_a = 6.310^-5 in the presence of 0.05 M k₂SO₄ ( a_H = 9 Angstrom , a_C_6H5COO = 6 Angstrom )

The charge balance equation of 2 moles of Na₂SO₄ that is added into 1 L water is :

Calculate the ionic strength of 0.2 M solution of KNO₃ and 0.2 M of Al₂SO₃

One of the following does not affect neither k_eq nor the position of chemical reactions :

The conjugate base H₂PO^-₄is

The pH, POH, [OH^-] respectively 2*10^-5 HNO₃

The POH of 1*10^{-7 M solution of HCl is}

The ph of 0.1M solution of sodium acetate ( salt of weak acid ) NaOAC Kb = 5.7* 10^-10

The POH of a blood sample whose PH 7.4 at 37 C is : Kw at 37 C = 2.5 * 10^-14

The POH of a solution prepared by adding 25 ml of 0.1 M NaOH to 30 ml of 0.2 M acetic acid ( HOAC ) Ka = 1.75 * 10^{-5
is :}