Recently Active Physical Chemistry Questions

The electrolysis of cold sodium chloride solution produces NaOH and Cl2. The Cl2 produced, the disproportionates into NaOH solution to give sodiumhypochlorite (NaClO) and sodiumchloride.How longwill a cell operate to produce ...

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If CO Bond length = 1.128 Angstorm, then the possible value of CO bond length is Fe(CO) is (a) 1.128 A (b) 1.10A (c) 1.13 A (d) 10115A I do not understand how the d pi- p pi bonding will affect eh bond order of CO bond….??? ...

1) on introducing a catalyst at 500k the rate of 1st order reaction increases by 2 times. the activation energy in the presence of a catalyst is 5 kj/mol. then what will be the Ea in the absence of the catalyst.? a)9.6 kj/mol ...

The critical temp of water is higher than O2 becoz H2O molecule has a)fewer e than O2 b)two covalent bonds c)V shape d) dipole moment ans given is c only...but it should be both c,d naa ? ...

If I is intensty of absorbe dlight and C is concentration of AB for photochemical process AB +hv --->AB*,rate of formation fo AB* is directly proportional to ?? a)C b)I c)I^2 d)C.I ALso plz expalin the concept behind it ...

Q1 When alpha particles are sent through thin metal foil,most f them go straight through becoz a)alpha particles are heavier than electrons b)alpha particles are positively charged c)most space of atom is empty d)alpha partic ...

15 ml of a gaseous hydrocarbon was required for combustion in 357 ml of air ( 21% of O2 by volume ) . If the gaseous products occupied 327 ml (at NTP) what is the formula of the hydrocarbon )... Ans c3h8 ...

A saturated soln of H2S is 0.1M HCl at 25C contains S2- concentration of 10-23 M.The solublity product of CuS and CdS are 10-44 and 10-25.If 0.01 M solns of salts in 0.1M HCl are saturated with H2S,which will be precipitated? ...

acid strength :H3PO4,H3PO3,H3PO2 ...give the order ...

1...WHY IN CASE OF NO and CO TYPE OF MOLECULES ENTROPY IS NOT ZERO AT OK? ...

The electrical conducitivty of soln of acetic acid will be __________,if a soln of NaOH is added ...

Ionic product of water Kw increases with increase in temp. therefore concentration of [H+] ions increases with temp. as pH = log 1/[H+] therefore pH must decrease with rise in temp. It is interesting to note that the pH value ...

1.system is isolated ...does it mean that it is an adiabatic container???? ...

1.how (Δs)surronding =-ΔH/T ...

1..RATE OF REACTION INCREASES ON INCREASING TEMPERATURE ... ...

2 g of P4 reacts completely with 2 g of o2 to produce P4O6 and P4O10... find the weight of P4O6 and P4O10 produced.? ...

after the electrolysis of 1 mole melted aluminium oxide,how much current(faraday) is needed to get (Al) and (oxygen) gas? ...

on analysis it was foudnd human blood is isotonic with 0.91 % NaCl soln.1L of sample of sea water contains 14.625g NaCl and 5.3 g Na2CO3 Q1 What will be amount of glucose present in 1L blood of fish to be osmotically in eq wi ...

in certain temparature ,and in same conductance cell 0.01(N)KCl and 0.01(N)NaCl solutions' specific conductance are as (y)mho/cm (z)mho/cm. if KCl solutions' conductance is (x)mho,then what is the conductance of NaCl solution ...

Ques 1) Consider the following statements The rate law for the acid catalysed hydrolysis of an ester is given as Rate = k [H+] [ester] = k' [ester] , if the acid concentration is doubled at constant ester concentration. 1) Th ...

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calculate the solubility of silver benzoate in a buffer of pH=3.19 . K(sp) of C6H5COOAg = 6.46 x 10-5 Doubt: In solution as it is given : C6H5COOAg → C6H5COO- + Ag+ C6H5COOH → C6H5COO- + H+ here let solubility of silver b ...

q1> Under which category does dative bond come - Sigma bond or pi bond ? q2> Arrange in increasing order of ease H-Shift,Alkyl shift,Ring expansion q3> Draw Structure of IFCl ...

Lyophilic sols are A. Irreversible sols B. They are prepared from inorganic compound C. Coagulated by adding electrolytes D. Self-stabilizing Should not the ans be C ?? Fiitjee has given A as Ans. ...

Among the following,the surfactant that will form micelles in aqueous solution at the lowest molar concentration at ambient conditions is A. CH3(CH2)15N+(CH3)3Br- B. CH3(CH3)11OSO3- Na+ C. CH3(CH2)6COO-Na+ D. CH3(CH2)11N+(CH3 ...

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Distribution coefficient of an organic acid between water and benzene is 4.0, in favour of benzene. 2.5g of acid is distributed between 25 ml of benzene and 50 ml of water Q1. amount of acid in 25 ml of benzene is Q2. molarit ...

The coordination number of a metal crystallizing in a hexagonal closed packed structure is A. 12 B. 4 C. 6 D. 8 ...

In a solid 'AB' having the NaCl structure 'A' atoms occupy the corners of the cubic unit cell.If all the face-centered atoms along one of the axes are removed,then the resulting stoichiometry of solid is --- A. AB2 B. A2B C. ...