Recently Active Physical Chemistry Questions

If the boiling point of a certain compound is elevated what will be the change in its freezing point? ...

Compare the ratio of rates of diffusion of the following two: Container-1: Volume=1 L, Temperature=300K, 1 moles of CO2 + 2 moles of H2 container-2: Volume=1 L, Temperature=300K, 1.5 moles of He ...

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q) The reaction given below, involving the gases is observed to be first order with rate constant 7.48 x 10-3 sec-1. Calculate the time required for the total pressure in the system containing A at an initial pressure of 0.1 ...

1) why is it so that many endothermic reactions that are not spontaneous at room temperature become spontaneous at high temperature? ...

calculate the final molarity of : 200 ml 1 M HCl +100ml .5M H2SO4 ...

Q1) Why do we say ΔS = Qrev/T Q2) While finding direction of spontaneity for a reaction, we say ΔSsurroundings = Qsurrounding/T = -Qsystem/T ΔSsurroundings = -ΔHsystem/T ΔSuniverse = ΔSsystem- ΔHsystem/T and further we ...

What is the percentage increase in weight when an open vessel kept at 21"Cis cooled to 7"C(avg molecular mass of air=29g/mol) ...

P4H10 is the anhydride of.... ...

Does the rate of a zero order reaction depend on temperature???? If not... WHY???? any one plzz reply... ...

why does the degree of dissociation of a salt of a weak acid and weak base not vary with concentration? ...

1000 ml of tap water containig ca(hc03)2 was titrated with N/50 hcl. if 300 ml of hcl were required calculate temporary hardness as parts of caco3 per 106 parts of water. please give complete solution ...

find the solubility product of a saturated solution of Ag2CrO4 in water at 298K if the emf of the cell is Ag|Ag+(satd Ag2CrO4 soln.)||Ag+(0.1M)|Ag is 0.164V at 298K. ...

i want somebody to explain the common ion effect in brief... preferably, manish sir or nishant sir...:P ...

1. 1.2 solution(W/V) of Nacl is isotonic with 7.2% solution(W/V) of glucose (molar mass 180 g mol-1. the degree of dissociation of nacl solution is____ 2. 'x'g of non electrolyte compound (molar mass 200) are dissolved in 1.0 ...

Q. A current of 3.7A is passed for 6hrs. between Ni electrodes in 0.5L of 2M solution in Ni(NO3)2. What will be the molarity of the solution at the end of electrolysis? Ans: 2M. Shouldn't it be less than 2M since it started a ...

what is the mass of oxygen that will react with 21 gm of Al? ...

Find the wavelength of electron having energy 150 eV ...

a) 50 ml of 0.1 M HCl + 50 ml of 0.01 M HCl b) 50 ml of 0.1 M HCl + 50 ml of 0.1 M H2SO4 c) 50 ml of 0.1 M HCl + 50 ml of 0.1 M CH3COOH (Ka=1.8x10-5) d) 50 ml of 0.1 M HCl + 20 ml of 0.1 M NaOH e) 50 ml of 0.1 M HCl + 50 ml o ...

Provide the name of the orbitals which has no angular nodes Also provide the orbitals with no radial nodes. ...

what volume of .1 M H2SO4 must be added to 50mL of a .1M NaOH solution to make a solution in which molarity of H2SO4 is .05M (a)400ml (b)50ml (C)100ml (d)150ml answer given is (C) whereas i am getting (b) ...

if 1/6,instead of1/12,mass of carbon atom is taken as relative atomic mass unit then the mass of 1 mole of an atom will:......REMAIN UNCHANGED could someone prove it? ...

why does electromagnetic field is created around an oscillating charged particle ...

in beta-emmision 0n1 -----> +1p1 + -1e° what do the superscript and subscript mean?? if superscript means mass .... is it approximaed 0 for electron ?? ...

i just could not understand the formation of crystals. the unit cube of CsCl is made of one Cs at the centre with eight Cl around it. our teacher explained it that the Cl atoms at the corners are shared and so the net no. of ...

100 mL of aqueous solution of glucose with osmotic pressure 1.2 atm at 25°C is mixed with 300 mL of aquous solution of urea at 2.4 atm at 25°C. the osmotic pressure of the mixture will be 1. 1.1 atm 2. 2.6 atm 3. 1.68 atm 4 ...

Q what is the pH of a solution made by mixing 100 mL HCl and 200 mL aniline? Kb for aniline is 4.6 x 10^(-10) One can solve this prob after realising a buffer is formed. The ans given in the book is 4.89 which is what we get ...

A sample of wusite Fe.93O1.00..find the % of Fe(III)in the sample... ...

We know that a energy of a electron shell is given by E= 2pi2z2e4m/n2h2 But then according to aufbau principal lower the shell number lower is the energy but according to formula e is inversely proportional to n2??? ...

is there any good short book for physical chemistry to claer my fundamentals. ...