Recently Active Chemistry Questions

a current of dry air was passed through a series of bulbs containing 1.25 g of solute A2B in 50 g of water and then through pure water .the loss in weight of the former series of bulbs was 0.98 g and in the later series 0.01 ...

compare acidic strength hco3- h3o+ hso4- hs03f ...

58. A balloon filled with ethyne is pricked with a sharp pointed needle and quickly dropped in atank of H2 gas under identical condition. After a while the balloon will be (A) shrunk (B) enlarged (C) completely collapsed (D) ...

I have certain queries in equilibrium- 1.Why equilibrium cannot be attained in a open container? 2.What is effect of decreasing pressure on the position of equilibrium? 3.What are the units of Kp & Kc? ...

blood is said to be isotonic with 0.85%[wt/v].NaCl solution at 40degrees celsius.assuming complete dissosiation of nacl .calculate total concentration of various solutes in blood .also report its approximate freezing point. ...

yaar!! can any one explain JEE 2009 paper 2 the reducing sugar Q? I am getting B,C? ...

chem paper 2 for d first order rxtion A-->P .wala q wats d value of Ea ??? ...

HCl, HBr, HI have acid strength in order in aqueous solutions as:??? I thought it should be HI>HBr>HCl, but answer is given to be HI=HBr=HCl Could sumbody pls explain? ...

wht do we mean by thermal stability of s block elements??? ...

1 just got 1 of dem from a frend.....so i m posting it here......... *Image* discuss d acidity order??? options... a..2>3>4>1 b..3>4>2>1 c..3>2>1>4 d..4>3>1>2 i guess b is correct,,,whts ur ...

IUPAC nomenclature of Na2[OsCl5N] ...

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wat is inorganik benzene ?? ...

In Zeigler Natta polymerisation of ethylene what is the active species?? ...

HCl , HBr , HI hav acid strength in order in aqueaous soln as HCl , < HBr ,< HI a HI < HBr ,< HCl , b , HBr < ,HCl < HI c HCl = HBr = HI d remove all commos <,> ? ...

in jee syllabus i found the following two different subtopics- 1.spectrum of hydrogen atom 2.Qualitative quantum mechanical picture of hydrogen atom plz explain me about the 2nd one. ...

what is significance of deltaG° ...

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use of Br2 water and NaOH to 3rd group ppt facilitates in??????? ...

*Image* Please explain with mechanism( i need it within 2 hrs) ...

Q 2.5 mL of 2/5M weak mono acidic base (Kb = 1 × 10–12 at 25°C) is titrated with 2/15 M HCl in water at 25°C. The concentration of H+ at equivalence point is (Kw = 1 × 10–14 at 25°C) (A) 3.7 × 10–13 M (B) 3.2 × 1 ...

75 g of a metal combines with 24 g of Oxygen to form metal oxide, find the equivalent weight & molecular weight of the metal. ...

How much (volume) of 0.001 M HCl(aq.) should be added to 10cm3 of 0.001 M NaOH to change its pH by one unit? ...

Q.1 Find the % of H+ from water at 250C in 0.1 M CH3COOH take Ka of acid as 10-4 Kw=10-14 and volume = 1L. (Give complete soln.) ...

If a refrigerator's door is kept open, then the room will be (a)cooled (b)heated (c)no effect please explain the answer ...

The vapour pressure of a solution of 9 g of non-electrolyte in 18 g of water at particular temperature is 2250 N m-2. The vapour pressure of pure water at that temperature is 3000 N m-2. The molecular weight of the solute is. ...

1. 0.1 mole of CH3NH2(kb=5*10-4) is mixed with 0.08 mole of HCl and diluted to 1 L.What wil b the H+ concentration in solution? a. 8*10^-2 b. 8*10^-11 c. 1.6 *10^-11 d. 8*10^-5 ...

what are confirmatory tests for detection of Ag+,Ca2+ and Mg2+????? ...

the vapour pressure of liquid water us 19 torr at 27 degre by wat factor does d molarvolume of water increases as it vaporuise to form an ideal ga under thses conditions as compared to original volume in liquid state ...

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