Recently Active Chemistry Questions

A closed vertical cylinder is divided into two parts by a frictionless piston, each part contains one mole of air. At 27°C, the volume of the upper part is 4 times the volume of the lower part. Calculate the temperature at w ...

A given sample of N2O4 in a closed vessel shows 20% dissociation in NO2 at 27°C and 760 torr. The sample is now heated upto 127°C and the analysis of mixture shows 60% dissociation at 127°C. ques.1. The total pressure of e ...

how to find the n factor for the salts which react such that no atom undergoes change in oxidation state ...

A:Addition of inert gas at constant volume in Habers process for synthesis of Ammonia produces more amount of NH3 B:Increase in pressure favours the formation of Ammonia in habers process (i)Both true,B is the correct explana ...

An alkane C6H14 gives two monochloroalkanes when chlorinated . what is structure of the original alkane? ...

Give the reactions ........................ *Image* adapted from MATER JI ...

are u getting 0.92????? *Image* it is a 2d picture of unit cell ...

A: isothermal expansion of ideal gas against vacuum must be simultaneously adiabatic R:the work done by system in above process is Zero. ...

A addition of dilute HNO3 to saturated soln of PbS increases solujblity of PbS R:Pb(NO3)2 and other nitrate salts are highly soluble in water ...

The volume percentage of Cl2 at equilibrium in the dissociation of PCl5 under a total pressure of 1.5 atm is? (Kp=0.202) answer:25.5 % ...

^{238}_{92}U is radioactive and it emits alpha and beta particles to form ^{206}_{82}Pb . Calculate the number of alpha and beta particles emitted in this conversio. An ore of ^{238}_{92}U is found to contain ^{206}_{82}Pb an ...

An Ester A(C4H8O2) on treatment with excess methyl chloride followed by acidification, gives an alcohol B as the sole organic product. Alcohol B, on oxidation with NaOCl followed by acidification, gives acetic acid. Deduce th ...

*Image* ...

q1)the ka1=5.6x10-2 ka2=6.2x 10-5 ksp=3.5x10-11 for oxalic acid,the solubility of this acid in a aqueous solution of ph=5.0 is a)9.9x10-3 b)10-2 c)10-4 d)9.9x10-5 ...

the ionization potential of hydrogen atom is13.6eV,if an h_ atom in ground state is excited by a monocromatic radiation of 12.1eV,then the no of sprectral lines aCCORDING TO BOHR'S THEORY WILL BE a)1 b)2 c)3 d)4 ...

An ester (A)with M.F C9H10O2 is treated with excess of RMgX and the complex is treated with H2SO4then compound (B)(an olefin) is formed wich on ozonolysis gives ketone with C8H8O.Now what is compound (A) ...

in CO wat will be the direction of coordinate bond and wat is the method to find it ...

atoms with nearly filled shells of electrons have greater electronegativity than those with sparsely occupied shells .. why ????????? ...

ques- PF3 CAN ACT AS A DONOR MOLEULE WHEREAS NF3 SHOWS LITTLE TENDENCY TO DONATE.ACCOUNT FOR THIS FACT. ITHINK THAT IN PF3 ELECTRON PAIR IS EASILY DONATED AS PHOSPHORUS IS LARGER IN SIZE THAN NITROGEN.IS THIS EXPLANATION CORR ...

NH3(AQ) REACTS VERY EASILY WITH Cu2+,IF ACID IS ADDED TO NH3(AQ),there is no reaction.explain. ...

Which of the following statement for order of reaction is not correct? A) order can be determined experimentally B) order of reaction is equal to sum of the powers of concentration terms in differential rate law C) It is not ...

what are hybridisation state of c and n atom in following molecule? *Image* i think- for nitrogen 1=sp2 2=sp3 3=sp3 for carbon 1=sp2 2=sp2 3=sp2 4=sp2 am i correct. ...

When a white crystalline compound X is heated with K2Cr2O7 and concentrated H2SO4 a reddish brown gas A is evolved. On passing A into caustic soda solution, a yellow coloured solution of B is obtained. Neutralizing the soluti ...

*Image* ...

conversion of cyclohexene to cyclohexanol can be conveniently achieved by a)NaOH-H2O b)Br2-H2O c)HBO-hydroboration oxidatin d)Hydroboaration hydrolysis SRY EDITED THE Q ...

explain reaction of alkenes with HOX ...

*Image* ...

*Image* ...

HEY wich 1 of 2 will undergo attack by OH- ion and do xplain ur answer in detail plz Ph---CH2Cl & Ph----CH-----Ph 1 Cl here the 1 and dotted lines i've used for bonds plz bear it ...

at 380 degree C, the half life period for the first order decomposition of H2O2 is 360 min. The energy of activation of reaction is 200 kJ/mol. Calculate the time required for 75% decomposition at 450 degree C ...