Recently Active Chemistry Questions

1)what do we mean by reversible electrodes.For example we say the quinhydrone electrode is reversible wrt H+ ions. why. 2)what is the use of metal-metal's insoluble salt-salt anion solution? 3)what happens in this cell and wh ...

how HCl can be dried by passing through conc. sulfuric acid? ...

does sodium acetate & dilute HNO3 make a buffer solution? ...

the ionization energy of barium is less thn tht of radium....this is different whn we compare the general trend in the group? does any one noe the reason??? ...

Compute the heat of formation of liquid methyl alchohol in kilo joule per mole using the following data. Heat of vaporisation of liquid methyl alcohol=38 kJ/mol. Heat of formation of gaseous atoms from the elements in their s ...

in the electronic structure of sulfhuric acid , the total number of unshared electrons is ....... also explain it ...

A slice of banana weighing 2.502g was burnt in a bomb calorimeter producing a temperature rise of 3.05 C. The combustion of 0.316g of benzoic acid in the same calorimeter produced a tempterature rise of 3.24 C. The heat of co ...

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0.722 g of bromide of an element A having atomic weight 91.2 in a series of reaction gives 1.32 g of AgBr. Find the valency of element A. Also,show the steps... ...

A plant virus is found to consist of uniform cylindrical particles of 150 angstrom in diameter and 5000 angstrom long. The specific volume of the virus is 0.75cm3/g.If the virus is considered to be a single particle, find its ...

arrange according to stability order : (i) CH3O *Image* C+H2 (ii) *Image* C+H2 (iii) CH3 *Image* C+H2 (iv) CH3C+H2 ...

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*Image* which is more stable? ...

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Q→ which of the following will react fastest with H2 under catalytic hydrogenation conditions ? *Image* ...

*Image* *Image* For 1st and 2nd image Question: what type of geometrical isomerism across the given double bond of the cyclic compound For 2nd and 3rd Find R and S using golden rule across each chiral carbon atom For 5th Whic ...

H3N+ (2) *Image* N+H3. (3) COOH (1) WRITE ORDER OF ACIDITY FOR 1,2&3 a) 3>1>2 b) 1>2>3 c) 1>3>2 d) 2>1>3 ...

H3N+ (2) *Image* N+H3. (3) COOH (1) WRITE ORDER OF ACIDITY FOR 1,2&3 a) 3>1>2 b) 1>2>3 c) 1>3>2 d) 2>1>3 ...

What is the solubility for PbS including hydrolysis of ions (assume pH of the solution tobe equal to 7). Given that Ksp(PbS)=7x10^-29 Kb (Pb(OH))+=1.5x10^-8 Ka1 H2S=1.1x10^-1 Ka2 HS- = 10^-14 I got the concept but I just cant ...

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1.hypervalent compound is(are):- A.SO3-2 B.PO4-3 C.SO4-2 D.ClO4-1 what r hypervalent compounds? ...

1. How does Bond angle vary with the Electronegativity of Central Atom and Surrounding/Co ordinated atoms and WHY? 2. Phosphorus Pentachloride exists in SOlid state as -- 3. Compare the Shapes and geometry of Nitrite and Nitr ...

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which book for organic chemistry having complete theory and objective questions?????? ...

why boiling point of cycloalkanes are more than correspondig unbranched alkanes with same molecular masses???? ...

[pt (NH3)4 cl2] [ptcl2] write its iupac name....... ...

σ-bond is stronger than a Π-bond..... hence when electrons are filled in the molecular orbitals σ2px should be filled before Π2py (or 2pz), (as in case of molecules with no. of electrons ≥ 15).... but for molecules with ...

The pair of compounds which cannot exist together in solution is- (A) NaHCO3 and NaOH (B) NaHCO3 and H2O (C) NaHCO3 and Na2CO3 (D) Na2CO3 and NaOH ...

which one of the resonating structures of 1-methoxy-1,3-butadiene is least stable : _ + a)CH2-CH=CH-CH=O-CH3 _ + b)CH2=CH-CH-CH=O-CH3 _ + c)CH2-CH-CH=CH-O-CH3 _ + d)CH2=CH-CH-CH-O-CH3 explain the reason ...

*Image* is a. trans b. Z c. both correct d.NOT ...