Recently Active Physical Chemistry Questions

The frequency v of a certain line of Lyman series of the atomic spectrum of Hydrogen satisfies the following conditions: A. It is the sum of another frequencies of Lyman line and a Balmer line. B. It is the sum of the frequen ...

Which pair of species have same percentage of carbon ? HCOOCH3 and C12H22O11 CH3COOH and C6H12O6 CH3COOH and C2H5OH C6H 12O6 and C12H22O11 how ...

A reaction A + B C + D. Initially, we start with equal concentration of A and B, At equilibrium we find the moles of C is two times of A. What is the equilibrium constant of the reaction? 1/4 2 4 1/2 xplain clearly ...

Which among the following substances is not ferrimagnetic? Mg Cr Zn . Fe what is ferrimagnetic..... ...

Q 1.60g of a metal were dissolved in HNO3 to prepare its nitrate. The nitrate on strong heating gives 2g oxide. The equivalent weight of metal is (A) 16 (B) 32 (C) 48 (D) 12 62. A metal oxide has 40% oxygen. The equivalent we ...

which of the following is not an intensive property vapour pressure internal energy specific heat refractive index give reason..............is ans vapour pressure? ...

a 20 lit cylinder contains H2 gas at 10 atm how many 1 lit ballons can b filled with dis gas at 1 atm pressure ? plz reply & how to know weder a compound is planar or not [in xamination point of view] ...

Bromine can be liberated from KBr solution by the action of : KI NaCl Cl2 I2 solution An ester used as medicine is : ethyl acetate methyl salicylate ethyl benzoate methyl benzoate ...

Which is a wrong assertion about the effect of temp. on distribution of mlecular speeds a)the area under the curve of temp vs kinetic energy of particles changes b)the distribution becomes broader c)the fraction of molecules ...

*Image* ...

why chloral hydrate [Cl3C-CH(OH)2] is highly stable ?? ...

green Cr+3 changes 2 yellow CrO4-2 ON BOILIN WIT A alkaline H202 B acidified H2O2 ...

Current is passed in AgSO4 aqueous solution & 1.6 gm O2 is obtained. the amount of Ag that will be deposited will be- [Ag=108 gm] ...

solution containin 3.24g of non volatile solute non eltorlyte and 200g water boils at 100.130 at 1atm wats d molclr mass of solute we dnt hav Kb na hw 2 do then i 4gt :'( ...

At isoelectric point : a) Colloidal particles becomes uncharged 2)colloidal sol becomes highly stable 3)Peptisation can be carried out 4)None of these ...

The reaction 2N2O5 <--> 4NO2 + O2 follows Ioder kinetics. Hence the molecularity of reaction is unimoleqular. pseudo unimoleqular bimoleqular. none of these. Given that Zn + ½ O2 --> ZnO + 35.28 kj HgO --> Hg +  ...

35) At 80° C , the vapour pressure of pure liquid 'A' is 520 mm Hg and that of pure liquid 'B' is 1000 mm Hg. If a mixture solution of 'A' and 'B' boils at 80° C and 1 atm pressure, the amount of 'A' in the mixture is (1 at ...

at 27 degree 41ml of ozone dissolves in 100ml of water at pressure of 1atm wats d mass of ozone dissolved in 200ml of water at pressure of 3atm and d same temp ...

the vapour pressure of water decreases by 10% when a solte is dissolved in it .the approximate molarity of the solution is 5.5 10 2 2.5 ...

pllz help it's urgent im losing cofidence for jee coz of this silly questiopn pppllz hlp the pka's of H2CO3 r 6.4 &10.3.the pka of HOBr is 8.7 if equimolar amount of the above two r dissolved in water what will be the predomi ...

Do all teh four C-H bonds in methans have equal bond energy? Coz ans given is dat none of them hav the same energy! But i think all of them do hav the same enrgy... If not pls temme why.. ...

WHat is Artificial transmulation in nuclear chem?? ...

how to determine the n factor of a compound please help ...

a mixture of SO2 and O2 at 1atm in the mole ratio of 2:1 is passed thru a catalyst at 1170'C at a sufficient rate for the attainment of equilibrium the gas is suddenly chilled and analysed is found to contain 87% of SO3 by vo ...

Rate of a reaction can be expressed by Arrhenius equation as: k=Ae-E/RT In this eqn, E represents? a...... b...... c. the energy above which all the colliding molecules will react. d. the energy below which colliding molcules ...

How many chiral carbon atoms are present in 2, 3, 4-trichloropentane ? 4 1 . 2 3 how to decide ?any technique ...

A current of electricity is passed through a copper voltameter and a water voltameter connected in series if the copper anode of the copper voltameter now weighs 16 mg less ,hydrogen liberated at the cathode of the water volt ...

An aqueous solution containing 100grams of dissolved MgSO4 is fed to a crystallizer where 80% of the Dissolved salt crystallises out as MgSO4. 6H2O Crystals. How many grams of the hexahydrate salt Crystals are obtained from t ...

Assuming complete ionisation, the pH of 0.1M HCL is 1. The molarity of H2SO4 with the same Ph is: a) 0.1 b) 0.2 c) 0.05 d) 2.0 Acetone and acetaldehyde are: a) functional isomer b) position-isomers c) chain isomers d) not iso ...

where is the interstitial position present in a lattice cube . Is it the void?? ...