Recently Active Physical Chemistry Questions

SIR,TODAY I READ AN ARTICLE AT THE SITE ABOUT A HANDICAPPED IITIAN...I SALUTE HIM. NOW, SIR,SO IS IT SO THAT IITs ALLOW STUDENTS WITH PHYSICAL BARRINGS TO TAKE ADMISSION.PLZ DO TELL. BECOZ I AM A "JUVENILE RHUMETOID ARTHRITIS ...

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at 25°C a solution containing 0.2 of polyisobutylene in 100cc of benzene,developed a rise of 2.4 mm at osmotic equilibrium.calculate the molecular weight of polysiobutylene if the density of solution is 0.88g/cc ...

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two beakers are placed side by side in a sealed enclosure.the first beaker contains 100 mL of pure water,the other,an equal volume of aqueous solution of sugar.whjat will be the volumes of the liquids in the two beakers when ...

in an oswald walker experiment,dry air was first blown thru a solution containing solute(M=278) in 150 g of water and then also thru pure water.the loss in mass of water is 0.0827g while mass of water absorbed in sulphuric ac ...

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cofumation wanted......... In case of a cubic cell havin atoms in CCP latticve, at EDGE-CENTRES at FACE CENTERE and at BODY - CENTER relation b/w r of atom and edge length is : ?? is it 4r = a ?? and wats the ratio of radius ...

2.0 g of phosphorus and 2.0 g of oxtgen are allowed to react leaving no residue of either of the reactants. Calculate the amount of P4O6 & P4O10 FORMED DURING THE COURSE OF REACTIONS. (Ans. 1.996 g P4O6 & 2.002 g P4O10) ...

Both leads of an LED conductivity probe are dipped in water,dried and then dipped in mercury. in which liquid the LED light up. 1) water 2) Hg 3) Both 4) None ...

if the rate constant for a reaction represented by 2HI===>H2 +I2 is denoted by K then for same reaction if represented by HI===>1/2 H2 +1/2 I2,the rate constant will be____________. ...

when 60.26g of VCl4 was added to 1000g of solvent,freezing point of solvent was depressed by 5.415°.Kf=29.9.calculate the no. of dimers,V2Cl8 . ...

plot a curve depicting the temperature dependence of the rate R of a simple one step reaction. ...

The oxidant(s) whose oxidizing power is affected with the change in pH is/are ? A] I2 B] Cr2O4- C] MnO4- D] NO3- ...

why the rxn of photosynthesis is spontaneous even if G=+ve for vthis rxn? ...

a long rectangular box is filled with Cl2 (atomic wieght 35.45) which is known to contain only 35cl and 37cl. if the box could be divided by a partition and the two types of Cl2 molecules put in the two compartments respectiv ...

if 100 ml of the acid is neutralised by 100 ml of 0.4M NAOH,the purity of concentrated HCL is?specific gravity=1.6 ...

a student finds that 31.26ml of a 0.165M solution of Ba(OH)2 solution is required to just neutralise 25ml of citric acid[H3C6H5O7.WHAT is the concentration of the solution? ...

for rxtion PCl5 --- > <---- PCl3 +Cl2 in agesous phase Kc=4 in 2liter flask thr r 2.5 moles iniially of each PCl3 n Cl2 equilibrim conc of PCl5 is m gettin it as .8 check wher thats rite ...

Al2O3 is reduced by electrolysis at low potentials and high currents.If 4*104A current is passed through molten Al2O3 for 6 hours,mass of aluminium produced.... ...

Calculate the energy required to excite one litre of hydrogen gas at 1 atm and 298K to the first excited state of atomic hydrogen. the energy of dissociation of H-H bond is 436 kJmol-1 ...

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40 ml of 0.05M sesqui carbonate is titrated against 0.05MHCL . xml of hcl is used when phenophthelene is the indicator and y ml HCLis used when methyl orange is used as an indicator in two separate titrations.Hence y-x is equ ...

which solution has highest boiling point. 1.1 percent solution of C6H12O6 2.1percent solution of NaCl 3.1 percent solution of ZnSO4 4.1 percent solution of (NH2)2CO plz post substantial reason also with your answer. ...

volumetric analysis 1.6 g of pyrolusite was treated with 60 ml of normal oxalic acid and some sulphuric acid .the oxalic acid left undecomposed was made upto 250ml ,25 ml of this solution required 32ml of 0.1Npottasium perman ...

a sample of hydrochloric acid contains 20% of hydrocloride by mass .how many grams of this acid sample is necessary to completely interact with 50 g of calcium carbonate? ...

Using van der waal's equation calculate the constant 'a' when two moles oaf a gas confined in a four litre flask exerts a pressure of a11.0 atm at a temperature of 300 K . The value of b is 0.05 L/ mol. ...

for reversible reaction in aq soln Zn2++X-→ZnX+,Keqis greatest when X is??? a)F- b)NO3- c)ClO4- d)I- ...

calculate enthalphy of combustion of propane in KJ /mol at 298K given BE (o=o)=410 kj/mol BE(c=o)=804 BE(c-h)=410 BE(o-h)=464 BE(c-c)=345 resonance enrgy of CO@ is -143kj/mol del H(vap) (h20 ,l)=41kj /mol wat i did was BE (pr ...