Recently Active Chemistry Questions

Air sample from industry heavily polluted with CO2 was analyzed.In one analysis,56L of air measured at NTP was passed through a 250mL of 0.025M NaOH solution where CO2 was absorbed completely.25mL of the above solution was th ...

By Kushal : Discuss the planarity of Cyclooctatetraene ...

how to predict the shapes of complexes in which central atom is surrounded by both weak and strong ligands ...

*Image* IN THE THIRD QUESTION,, one position contains CH3 and the other NH2... ...

An unknown compound A is composed of manganese and oxygen having 36.78%oxygen by weight.If 1.7g of A is heated in stream of hydrogen gas,water is formed in assosciation with 1.5g of B(MnxOy) Q1 Weight of water formed=____ ...

can u tell me y the following trend is difft. d 1st ionization enthalpy values of gp 13th B Al Ga In Th 801 577 579 558 589 ...

A compound AX2 reacts with another compound BY in a redox reaction.X is an element in AX2 with oxidation number +3.Y is an element in BY with oxidation number -2.In one of the products CX , X has oxidation number +1.The other ...

wats the difference between monds process and van-arkel process ...

if all d species r in their std states wich of d follwin is d strongest oxidisin agent ? a)Br- b)Zn(2+) c)Co(+3) d)Fe(+2) i can do this q if i wer given d ECS ........bt no values r given so plez tellme d oncept 2 solve s ...

Why on increasing the alkyl chain + I effect of alkyle groups increases/ ...

What is a conjugate system?(conjugation) how can we identify conjugate system/.. what points should be kept in mind while identifying conjugate systems? ...

wich of d follwin statemnt bout spontaneous rxtion occurin in galvanic cell is true a)Eocell>0, delGo<0 Q<Keq b)Ecell>0, delG<0 Q<Keq ...

what is the meaning of conjugate pi bonds???? plz explain with example! ...

For a first order reaction 2A→Products what is [A] as a function of time? Does that coefficient 2 makes a difference? ...

Successive ionisation potentials of an element M are 8.3,25.1,37.9,259.3 and 340.1ev. The formula of its Bromide is _? ...

8.4g of nitrogen gas is sealed with 5g hydrogen gas in a flask and heated where the following equilibrium is established N2+3H2 [equil]2NH3 At equiilbrium reaction is 60% complete.The gaseous mixture at equilibrium is passed ...

Determine pH of a 5% solution obtained by adding 25mL 0.1M HCl to 50mL 0.1M KNO2 solution.Ka=7*10^(-4). ...

1.2g of a salt with their emperical formula KxHy(C2O4)z was dissolved in 50mL of water and its 10mL part reqd 11mL of 0.1M HCl solution to reach equivalene point.IN a separate titration 15mL of stock solution reqd 20mL 0.2475 ...

hello someone please answer these questions : *Image* ...

Cu+ has 10 d electrons, then why 2+ state of copper (Cu 2+) is possible ...

What is area under Cp/T versus T0 graph????????????????? where Cp =Heat capacity at constant volume T= TEmperature T0 = Absolute temperature ...

Determine molar solublity of AgSO4 in 0.25M Na2SO4 solution and determine the factor by which soolublity decreases when it is compared to solublity in pure water.Ksp=1.4*10-5 at 25°C ...

hw many grm moles of HCl will b required to prepare one litre of buffer solution (conatinin NaCN and HCl) of PH 8,5 usin .01 grm formula weight of NaCN ? Kdisso (HCN)=4.1*10^(-10) here is am method rite ph=pka+log ...

CH2—CH—CH2—COOCH3 CN OCH3 plz tell me fast ...

1.) the nodal plane in the pi bond of ethane is located in a) the molecular plane b) a plane perpendicular to the mol plane wich bisects the C-C σ-bond at right angle c) a plane parallel to mol plane d) a plane perpendicular ...

250ml of a sol. contains 2.65 grams of Na2CO3. 10ml of this sol. is added to "x" ml of water to obtain 0.001M Na2CO3 SOL. What is the value of"x" in ml ?? ...

*Image* In cannizaro reaction , why electron withdrawing nature of R group accelerates and electron donating nature slows down the reaction ??????? ...

Before doing nitration of aniline, it is converted to acetanilide. Why??? ...

The electronic conf. of a tripositive metal ion is [Ar]3d5.If it's mass no. is 60,the total no. of fundamental particles init's neutral atom is....??? ...

i red roschells salt is used in fehlings soln any1 know y >>>>>>>>>>>>??>>>>>>>>> sems intrestin>>>>>>> replyyyy?>>>> ...