Recently Active Chemistry Questions

BiCl5 does not exist..why ?? ...

find the total no.of isomers of [M(AB)3] , [M(AA)a2b2] , [Ma2b2cd] , [Ma3bcd] sorry for giving so many at a time..........but i am super confused in it ...

THE IONISATION ENERGIES OF GROUP 1 METALS SUGGEST THAT Cs(CESIUM) SHOULD BE MOST REACTIVE ,BUT THE STANDARD ELECTRODE POTENTIALS SHOW THAT Li(LITHIUM) IS THE MOST REACTIVE......RECONCILE THESE OBSERVATIONS ...

Aluminium Chloride (AlCl3) exists as a dimer in solid phase , named Dialuminium Hexachloride (Al2Cl6) , with its octet fully filled . So it should have a good deal stability . But it still acts as a Lewis acid . Why is so ? ...

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 ??? ...

*Image* The decreasing order of reactivity of the compounds given below towards solvolysis under identical conditions is: (a) II >III >IV>I (b) I>II>III>IV (c) IV>III>II>I (d) III >II >I>IV ...

The following compound *Image* treated with AgNO3 and H2O ?? ...

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 ...

*Image* Ease of SN1 ractions among these compounds upon tratment with Aq NaOH will be in the order as: (a) I >II >III>IV >V (b) IV>I>III>II>V (c) I>IV>III>II>V (d) V> IV>III>II> ...

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 ( ...

this is wolff rearrangement naaa ???? *Image* but i ma not gtting correct answer......plz help ...

IT'S NOT SO EASY ? *Image* ...

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.if an element forms a series of oxoacids ,then more the. oxygen atoms present , the more acidic it will be.......why?? ...

Someone plez help me with these 1.correct starement(s) among the following is/are a)increasing covalent character : LiCl<BeCl2<<Bcl3<<Ccl4 b)increasing solubility in water : Ca(OH)2< Sr(OH)2<Ba(OH)2 c)inc ...

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 ...

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(A)Say whether true or false and give valid explanation: 1) Iodine does not react with CH4 at all 2)The energy of activation of Cl.+CH4 → HCL + CH.3 is smaller than that of Br.+CH4 → HBR + CH.3 (for clarification: here th ...