Recently Active Physical Chemistry Questions

Given that HOBr undergoes disproportionation,mention 2 pair of products which are possible???? *Image* ...

An optically active isomer of A is dextrorotatry.A on dissolving in organic solvent starts isomerising into leavorotatory form by first order process as A(+)→A(-) The data for progress of reaction is : *Image* Answer these ...

the VW's constant 'a' for CO2 gas is greater then that of H2 gas. it means dat : a) strength of VW force of CO2 gas < that of H2 b) ---------------&# ...

one liter of O2 at STP is converted into H2O in acidic solution The number of faraday of electricity consumed are ? ...

There is density change in vacancy defect but no density change in Frenkel defect. They both involve dislocation of the atom in the lattice point to an interstitial space. So why do they show this difference? ...

solubility of AgCl in pure water is 8*10-6 solubility of AgBr in pure water is 4*10-6 solubility of AgI in pure water is10-6 find solubility of AgCl when all of these three mixed together??? ...

*Image* wat is the space lattice given in the fig refers to.. ...

1 gm mix of NaOH and Ca(OH)2 gets completely neutralised by x ml 1 M HCl solution the value of x can be (a)20 ml (b)26 ml (c)15 ml (d) 30 ML ...

The solublity of AgBr in pure water is 5 *10-7 M. What is solublity of AgBr in a soln which contains 0.01 mol NaBr per litre??? ...

Which indicator i,e pH range would be suitable for titration of 0.1M C5H5NHCl with 0.1M KOH?? Kb C5H5N=1.8*10-9 ...

Whatr is ph of 1L buffer containig initially 0.02 mol NH3 and 0.02 mol NH4Cl after addition of 0.01 mol of NaOH? (Ignore volume change).pKa NH4+=9.24 ...

Does the pH increase .decrease or remains same on carrying out these processes: a)NaNO2 added to a solution of HNO2 b)(CH3NH2)CL added to soln of CH3NH2 c)HCl added to soln of CH3COONa ...

Final pH of soln obtained by mixing 100ml 0.1M HCl and 100ml 0.1M Ba(OH)2 ?? Plzz give me a hint first ...... ...

An indicator changes from blue to colourless at pH=10.5 as acid is added.At this pH the ratio of acid top salt(conjugate base) is 0.1 i.e [HIn]/[In-]=0.1.Estimate Ka ...

2g of C6H5COOH dissolved in 25g of benzene shows a depression in freezing point equal to 1.63k.Molar depression constant for benzere is 4.9K kg mol-1.what is the percentage association of acid if it forms double molecules in ...

In bimolecular reactions, two molecules collide. In trimolecular reactions, three molecules collide. How many molecules collide in unimolecular reactions? One? [7][7] ...

A solution of leucine is titrated with strong base.pH before=1.85 ,the pH at mid pt. is 2.36 and at stoichiometric point is 6 .Determine Ka of leucine ...

Lemon juice normally has a pH of 2.If all the acid in the lemon juice is citric acid and there are no citrate salts present, then what will be the citric acid concentration [HCit] in the lemon juice?(Assume that only the ...

find eq weight of HNO3 in the given reaction Mg+ HNO3→Mg(NO3)2+ NH4NO3+H2O ...

For an endothermic reaction where ΔH represents the enthalpy of the reaction,the minimum value of the energy of activation will be a) <ΔH b)>ΔH c)=ΔH d)0 ...

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A reaction is taking place.. A is converting to B at certain rate..i.e. A B at t=0 10 0 t=2 mins 8 1 t=4 mins 6 2 ... .. Now if we write the reaction as 2A→B then rate=-d[A] = d[B] 2dt dt rateavg(t=2 ...

3Ag +2Bg *Image* 4Cs for the given reaction the rate of consumption of A is 4 gm/min and of B is 6 gm /min the rate of formation of C is ...

What is the pH of water at 0ºC ? 7 7.69 6.48 undefined may b a very Stupid question....:P ...

A lead sorage cell is discharged which causes the H2SO4 to change from a concentration of 34.5% [density=1.26 g/ml] to one of 27 weight%.The original volume of electrolyte is 1 L.How many faraday`s have been left at the a ...

IF Kp for the equilibrium , (s) CuSO4.5H2O <---------> CuSO4.3H2O + H20 is 1.086 * 10-4 atm2 at 25°C , then the efflorescent nature of CuSO4.5H2O can be noticed when vapour pressure of ...

A lead storage cell when charged causes the formayion of H2SO4 and its cocentration is increased.In a battery having 1L electrolyte, contains 27by weight of H2S04[density=1.13g/ml].On charging ,the sulphuric acid cocentra ...

given [Ag(NH3)2+]→Ag+ + 2NH3 kc=6.2x10-8 Ksp(AgCl)=1.8x10-10 at 298 K. calculate the concentration of complex in 1 M aqueous ammonia pls provide detailed solution ...

The freezing point of an aqueous solution of KCN is 0.1892 mol Kg-1 of solvent was found to be -0.7040C. On adding 0.095 mol of Hg(CN)2, the freezing point of the solution was found to be -0.5300C. If the complex-formation ta ...

100gm of CaCO3 is heated in a vessel of 100 l capacity at 1000k. CaCO3 decomposes to form CaO and CO2 ..if kp for the equilibrium CaCO3 <----> CaO + CO2 is 7.5 atm, then find the % of CaCO3 unreacted ...