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Chemistry
List of top Chemistry Questions
The more positive the value of
$E^{\circ}$
, the greater is the tendency of the species to get reduced. Using the. standard electrode potential of redox couples given below find out which of the following is the strongest oxidising agent.
$E^{\circ}$
values :
$Fe^{3+}/Fe^{2+} = + 0.77; I_{2\left(s\right)}/I^- = + 0.54$
;
$Cu^{2+}/Cu = + 0.34$
;
$Ag^{+}/Ag = + 0.80\, V$
Chemistry
Classical Idea Of Redox Reactions – Oxidation And Reduction Reactions
The solubility product of silver chromate is
$4 \times 10^{-12}$
. The molar solubility of the salt is
Chemistry
Solutions
During osmosis,flow of water through a semipermeable membrane is
Chemistry
Solutions
The molarity of 98%
$H_2SO_4$
(d = 1.8 g/mL) by weight is
Chemistry
Mole concept and Molar Masses
Dissociation constants of
$CH_3COOH$
and
$NH_4OH$
in aqueous solution are
$10^{-5}$
. If
$pH$
of a
$CH_3COOH$
solution is
$3$
, What will be the
$pH$
of
$NH_4OH$
?
Chemistry
Equilibrium
$C - C$
bond order in benzene is
Chemistry
Properties of benzene
Electrolytic decarboxylation of sodium propionate produces
Chemistry
Hydrocarbons
During electrolysis of a solution of
$AgNO_3$
,
$9650$
coulombs of charge is passed through the solution. What will be the mass of silver deposited on the cathode?
Chemistry
Electrochemistry
Duraluminium is an alloy of
Chemistry
p -Block Elements
Which one of the following produces acyl halide by treatment with
$ {PCl_5}$
?
Chemistry
Haloalkanes and Haloarenes
The electronic configuration of two elements
$X$
and
$Y$
is given below :
$X=1s^{2}$
,
$2s^{2}2p^{6}$
,
$3s^{2}3p^{6}$
,
$4s^{2}$
$Y=1s^{2}$
,
$2s^{2}2p^{6}$
,
$3s^{2}3p^{5}$
The formula of the ionic compound that can be formed between these elements is
Chemistry
Classification of elements and periodicity in properties
If
$K_1$
and
$K_2$
are the respective equilibrium constants for the two reactions.
$ {XeF6_{(g)} +H2O_{(g)}<=> XeOF4_{(g)} +2HF_{(g)}}$
$ {XeO4_{(g)} +XeF6_{(g)} <=> XeOF4_{(g)} +XeO3F2_{(g)}}$
The equilibrium constant for the reaction,
$ {XeO4_{(g)} +2HF_{(g)} <=> XeO3F2_{(g)} +H2O_{(g)}}$
is
Chemistry
Equilibrium
The vapour pressure of water is 12.3 kPa at 300 K. The V.P. of 1 M solution of a non-volatilenon electrolyte solution is
Chemistry
Solutions
Chlorine exists in two isotopic forms,
$Cl-37$
and
$Cl-35$
but its atomic mass is
$35.5$
. This indicates the ratio of
$Cl-37$
and
$Cl-35$
is approximately
Chemistry
Structure of atom
A container of volume V, contains 0.28 g of
$N_2$
gas. If same volume of an unknown gas under similar conditions of temperature and pressure weighs 0.44g, the molecular mass of the gas is
Chemistry
Some basic concepts of chemistry
Equivalent weight of hydrated (crystalline) oxalic acid is
Chemistry
Some basic concepts of chemistry
Preparation of ethers by reacting sodium alkoxide with alkyl halides is called
Chemistry
Preparation
Electronegativity is not a measurable quantity. The electronegativity of any given element is not constant, it varies depending on the element to which it bound.
Chemistry
Classification of elements and periodicity in properties
In a cyclotrimetaphosphoric acid molecule, how many single and double bonds are present?
Chemistry
p -Block Elements
Dispersed phase and dispersion medium in butter are respectively
Chemistry
Surface Chemistry
Boric acid is polymeric due to
Chemistry
p -Block Elements
Ammonium cyanate on heating gives
Chemistry
Organic Chemistry - Some Basic Principles and Techniques
Dimethyl ether and ethyl alcohol are
Chemistry
Alcohols, Phenols and Ethers
Non stoichiometric defects are formed by
Chemistry
Imperfections in Solids
Ammonia acts as a very good ligand but ammonium ion does not form complexes because
Chemistry
coordination compounds
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