Recently Active Chemistry Questions

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

FIND MAX POSSIBLE ELECTRONS SATISFYING THE EQ IN QUANTUM NO n+L =m+4s+1 n,L,m,s having their usual meaning ...

why cant we have rearrangement in carboanions like we have in carocations??? is it due to the face dat -I effect increses.........so the species become more destablised??? n why doesnt rearrangement oc ...

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 ...

Arrange the ligands in decreasing order of bascity: PPh3,PMe3,PH3,P(OR)3,PF3 ...

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 ...

how many electrons in Zn(atomic number 30) satisfy the given equation n+L =2m+3s+1 ...

sulfur and phosphorus shows catenation property while oxygen and nitrogen dont ...

is metallury imp for iit? should v have to remember all those extraction and preparation of many s, p block compounds? help me in organising the inorganic part!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!1 pl ...

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 ...

Q. One litre of water contains 10-7moles of H+ions.Degree of ionisation of water is----------? The answer is :1.8*10-7% ...

Which of the follwing is the best leaving group ? a.NH4+ b.CH3COO- c.OH- d.H2O ...

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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 ...

consider the following reaction I:2Cu2++4I-→Cu2I2+I2 II:Fe3++SCN-→[FeSCN]2+ reversible nature can be expected in which of the reactions. ...

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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 ...

find y *Image* ...

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 ...

find product *Image* ...

Does hbo has to do something to do with sterichinderance?? ...

a) *Image* in above figure C1-C2 bond length is shorter than C2-C3 bond.how?? b) tetrachloroethylene does not decolourize bromine in CCl4 c) what is the action of B2H6/THF ; CH3COOH on 1-methylcyclohexene d) why a car ...

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 ...

what does a secondary benzylic mean when used to desribe a carbenium ion? ...