Recently Active Physical Chemistry Questions

plz explain the exact meaning of pH value & for what purpose is it used? ...

which single factor accounts for the ability of metals to conduct electricity and heat .....???? why are ionic solids poor conductors of electricity even if they are composed of charged particles????? ...

why H-P-H bond angle is smaller than H-N-H bond angle in NH3 ...

WHY LATTICE ENERGY OF *Image* ...

explain structure of *Image* ...

how hydrogen bonding dffects dipole moment ...

One of the conditions for asolution to behave idealy is that the interactions between the solute and the solvent particles should be the same as those between solute-solute and solvent-solvent particles.Keeping this fact in m ...

500 ml of 0.2 M aqueous solution of acetic acid is mixed with 500 mL of 0.2 M HCl at 25 C. If 6 g of NaOH is added to the above solution,determine the final pH.(Assume no change in volume on mixing) Ka(CH3COOH) = 1.75 x 10-5 ...

NCERT: Intext question A compound forms hcp structure. What is the total number of voids in 0.5 mol of it? How many of these are tetrahedral voids? ...

does catalyst increases frequency of colliding molecules ...

*Image* what the difference ...

Q1. For the reaction 2HI --> H2+I2 the rate constant is k. What is the rate constant of the reaction HI --> H2/2+I2/2 ? Q2. Draw the graph of the temperature dependence of the rate of reaction R of a simple reaction. i. ...

What comes after this in MO configuration σ1s2 σ*1s2 σ2s2 σ*2s2 σ2p2 π2p2 π2p2 π*2p2 π*2p2 σ*2p2 ? ...

in chemical adsorption unimolecular layer is formed .........but according to langmuir assumption adsorptions starts only when one molecular layer is there ...then chemical adsorption won't take place.......... please explain ...

Two 10g bars of metal of atomic weight A1 and A2 are heated to 60°C and then immersed in identical insulated containers each containing 200g of water at 20°C.Which metal will cause a greater temperature rise in water? Given ...

consider a Ca-atom to be spherical,find the radius and density of 40Ca ...

why small ions higher ioniation emergies ...

explain degree of dissociation is 1-e^(-kt) ...

For a parallel chain reaction A→ B A→ C A→ D The rate of formation of B is 40% of rate of decay of A and the rate of formation of C is 50% rate of decay of A, then what will b the partial halp life of A, while it is con ...

is activaion energy independent of temperature ...

smaller the packing fraction higher the stability of nucleus ??? ...

in nuclear fusion and fission Binding energy increases ...

plot of log k versus time 1/t for first order reaction ...

*Image* ...

explain tenp. coefficient for exothermic and endothermic reactions ...

please explain dipole moment. ...

What method should be employed to hybridisation of the central atom and the shape of the molecule NCO-.Please answer. ...

in photochemical reactions free energy increases why ??????? ...

is arrhenius fator independent og temp. ...

why no meaning of molecularity for complex reactions ...