Recently Active Physical Chemistry Questions

69 The graph plotted between ΔmixingG/nRT versus mole fraction of one component X in mixture *Image* ...

For the dissociation reaction N2O4(g)→2NO2, Find the degree of dissociation(@) in terms of Kp and total equilibrium pressure P. ...

Gallium is an element of 13th group. It has very low melting point i.e., 30°C Ga (s) <--->Ga (l) Forward direction in this equilibrium is favoured by 1.High temperature and low pressure 2. High temperature and high pre ...

What is the potential of the cell having two electrodes, the negative one is in contact with 10 -8 M H+ and positive one is in contact with in 0.25 M H+ ???? ...

Electrons in various degenarate orbitals of a subshell can be filled by followin arrangements: x!/(x-y)!y! . where x = 2 * no. of orbitals y = no. of electrons Then a p^2 configuration can be written in how many ways? ...

When heated, NH4COONH2 decomposes as below: NH4COONH2(g)→2NH3 + CO2 At a certain temperature the equilibrium pressure of the system is 0.318 atm.Find the Kp for the reaction.. ...

N2(g)+3H2(g)→2NH3 For the reaction initially the mole ratio was 1:3 of N2 and H2.At equilibrium 50% of each has reached.Find the partial pressure of NH3 at equilibrium if the equilibrium pressure is P. I am getting P/3 as a ...

One mole of pure ethyl alcohol was treated with one mole of pure Acetic Acid at 25.C.One third of the acid changes into ester at equilibrium.Find the equilibrium constant for the reaction. ...

I2(aq)+I-(aq) → I3-(aq) We started with 1 mole of I2 and 0.5 mole of I- in one litre flask.After equlibrium is reached,excess of AgNO3 gave 0.25 mole of yellow ppt.Find the Equilibrium constant of the rxn. Note--- → repre ...

If Critical pressure of gas A < B then is the ease of liquification of A > B ??? ...

The equilibrium const for a reaction is K,and the reaction quotient is Q.For a particular reaction mixture,the ratio K/Q is 0.33.This means that A--the reaction mixture will equilibrate to form more reactant species B--the re ...

a)Bonding electrons >Anti Bonding electrons b)It contains unpaired electrons in Anti bonding orbital c)It contains unpaired electrons in Bonding orbital ...

What is the difference between solubility product and ionic product? ...

The diagram shows the rcn. profile of a typical rcn Rctnts.>< prods Which of the following changes would cause both of the rate consts k1 & k-1 to be increased a) Introducing a catalyst b)heating the equill mix. c)Cooli ...

The equill const Kp for the rcn. X +Y *Image* Z is found to vary with temp as shown in graph Explain how the following conclusions can be drawn fron it: 1) The equill mix contains a high proportion of Z at high pressures 2) T ...

The equilibrium constant Kp for the following reaction at 191.C is 1.24.What is Kc? A--6.7 B--0.61 C--8.30 D--0.2 I used Kp=Kc(RT)Δn but failed to match any option.. ...

The molecules in a heated metal block are vibrating at a frequency of 1.51*10^15 Hz. How many levels of energy are possible for the molecules between 2*10^-7 J and 13.6*10^-7 J ? (h = 6.626*10^-34Js) ...

40 atoms of radioactive element x( t→1/2=10 hours) r present.how many r likely to remain after 40 hours.... a. 1 b. 2.5 c. 5 d. 3 since radioactivity follows 1st order kinetics so t half should remain constant and by doing ...

Ques1) Standard electrode potentials are Fe 2+ / Fe ( E° = -0.44 V) Fe 3+ / Fe2+ (E° = 0.77 V) If Fe 2+, Fe 3+ and Fe blocks are kept together , then (a) Fe3+ increases (b) Fe3+ decreases (c) Fe2+ / Fe3+ remains unchanged ( ...

Ques2) Based on the following information arrange the four metals A, B, C and D in order of decreasing ability to act as Reducing agents : (I) Only A,B, and C reacts with 1 M H Cl to give H 2 (g) (II) When C is added to solut ...

The Schrodinger wave equation for H-atom is \large \Psi = \frac{1}{4\sqrt{2\Pi }}(a_0{})^-\frac{3}{2}{}\left(2 - \frac{}{r_0{}}a_0{} \right)e^-\frac{r_0{}}{a_0{}}{} Where a0 is Bohr's Radius,if the radial node in 2s be at r0 ...

do we really require born lande equation for get the value of lattice energy ...

1)Caculate the molar solubility of Mg(OH)2 IN 1.00m NH4Cl (aq) Ksp(Mg(OH)2)=1.8x10-11 Kb(NH3 aq) =1.8X10-5 i request the users to give a detailed explanation for the qn,bcos i have pbm in doing ionic qns,If i can understand u ...

liquid ammonia ionizes to a slight extent. at -50 degree Celsius its ionization constant is K(NH3 )= [NH4+][NH2-]=10-30. how many amide ions are present per cm3of pure liquid ammonia??? ...

Compare the ond angles between H2O,OF2, and Cl2O. Justify Your Answer. ...

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S1 : Bohr's theory can also be applied to Pb81+ . S2 : Bohr's theory is applicable only for H or H like species. Can Pb81+ be even formed ?? ...

i am a bit confused .-radioactivityas we know there is always a mass defect .then why the packing fraction is positive as well as negative..................hmmm let me see how can help ...

The degree of dissociation of PCl(5) at 1atm pressure is 0.2.Calculate the pressure at which PCL(5) is dissociated to 50%. ...

Which one is heavier 1 amu of C-12 or C-14 isotope? ...