Question

(A) (B) (C) (D) (E) It cannot be determined from the information given Q(27) The pH of a 0.050 M aqueous solution of ammonium chloride falls within what range? A) 0-2 B) 2-7 C)7-9 D) 9-12 E) 12-14 Q(28) Based on the information in the table below: which acid in aqueous solution is the weakest? Name Formula K Acetic Acid CH3COOH 1.8X10-5 Benzoic Acid C.HSCOOH 6.3 X10-5 Formic Acid HCOOH 1.7 X 104 Hydrofluoric Acid HF 7.1 X 104 B) C&HCOOH C) HCOOH D) HF Q(29) K = 2.39 for the gaseous reaction SO2Cb -- SO2 + Cl2. For a mixture where Q = 5.21 to reach equilibrium, the concentration of SO2Cl2 must A) Increase B) Decrease C) Depends on the amount added D) It cannot be determined Q(30) Which statement is correct? A) If Q<k then products must be converted to reactants. B) If Q>k then reactants must be converted to products. C) IfQ=K then the system is at equilibrium. D) If Q<K then more reactants are produced. E) None of the answers is correct. Q(31) A Brønsted-Lowry base is? A) A proton donor. B) A proton acceptor. C) An electron pair donor. D) An electron pair acceptor. E) An anphoteric species. Q(32) A Lewis base is? A) A proton donor. B) A proton acceptor C An electro

Answer 1

Q31) is the one which A can Bronsted - accept lowny base a Proton, Base A Protem accepton is Bronsted 895 Hel + Nuits Nhat té Browled base Here Nit is a brousted ball it can a Proken forom Hel and form what Neits is a bousted base. accent Q32) which A can Lewis donate An base electron electron is a substance pair pair donose is a lewie bare fzBG Nilt i donating its the lone pairs eg: f₂ BDF + In the give biample op elections to Bf3 i NH3 i u a electron pair % b - Nis nolecale, leais bare donor in because of

molar molar Hot Q: Reaction quotienti Reaction quotient i the ratio of product of concentrations of products to the Product of concentrations of neactants i n left as consideri la reaction a l O a At bo Ž cca do Qc Coʻcome CAJ º coobs in the - K= Cocilibrium . Contant Ecuilibrium constant i applicable only when concentrations of the reactante . and products have affaired their railibrium state. eruilibrium constant s independent of initial concentrations of the reactants and products lelo es causideen a greaction ... a At bis &ccedo che ha temperature, - ka [c2 Colc A [A]a[B] Eeuilibrium constant delends on Stoichiometric to efficients o f Qc s kc Then the reaction in the direction of reactante il will proceed reaction backaud takes place

the of reaction products will it proceed forward * If Qc clc then in the direction - reaction Jakes place 0 f Qc o kc The - reaction mixture is already at equilibrium. B © - If equilibrium | Q=k then the system is al é correct 9 ks 2,309, Bock Sog tebe, for a miestuose Q: 5.21 In the given minture reaction quotient o) and fruilibrium constant ik given. Qik. To reach the audibsium, the reaction will Poceed in the direction of reactions on it, backord reaction takes place A concentration of soch will increases reactants we reaction means into products reaction means into reactants * for world converted * Backend cancerted Products are

According to the given table Benzoic Acetic acid hause least ka vale He has more ka valce. -> when the ka valce i d moe its acte as sessong acid . when the ka vake i i lelu it acte as a createst acid. Benzor acid i ext.cooked acte as weakest acid in . aqueous solution
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