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Recent questions tagged physical chemistry
+2
votes
1
answer
For the reaction; N2(g) + 3H2(g ⇌ 2NH3(g).
asked
Apr 7, 2019
in
Chemistry
by
kratos
class-11
jee
physical chemistry
jee mains
class-12
chemical equilibrium
+2
votes
1
answer
The electrochemical equivalent of a metal is 3.3 × 10^–7kg per coulomb. The mass of the metal liberated at the cathode
asked
Apr 7, 2019
in
Chemistry
by
kratos
thermal and chemical effects of current
electrochemistry
class-11
jee
physical chemistry
jee mains
class-12
current electricity
+2
votes
1
answer
Find (a) the total number of protons and (b) the total mass of protons in 34 mg of NH3 at STP.
asked
Apr 7, 2019
in
Chemistry
by
kratos
physical chemistry
class-11
class-12
atomic structure
structure of atom
+1
vote
1
answer
The ratio of the energy of a photon of 2000 A wavelength radiation to that of 4000 radiation is
asked
Apr 7, 2019
in
Chemistry
by
kratos
chemical bonding and molecular structure
class-11
jee
physical chemistry
atomic structure
jee mains
class-12
+1
vote
1
answer
A cylinder with fixed capacity of 67.2 lit contains helium gas at STP. The amount of heat needed to raise the temperature
asked
Apr 7, 2019
in
Chemistry
by
kratos
neet
cbse
thermochemistry
class-11
aiims
physical chemistry
jee mains 2019
specific heat capacities of gases
class-12
+3
votes
1
answer
The molecular mass of butyric acid was determined by experiment to be 88. What is the molecular formula?
asked
Apr 6, 2019
in
Chemistry
by
kratos
class-12
class-11
physical chemistry
mole and equivalent concept
+3
votes
1
answer
A solution of HCl is diluted so that its pH changes by 0.3. How does concentration of H^+ ion change?
asked
Apr 6, 2019
in
Chemistry
by
kratos
class-11
jee
physical chemistry
acids bases and salts
kvpy
ionic equilibrium
jee mains
equilibrium
class-12
+1
vote
1
answer
90Sr decays to 90Y by β decay with a half-life of 28 years. 90Y decays by β decay to 90Zr
asked
Apr 6, 2019
in
Chemistry
by
kratos
class-11
jee
physical chemistry
class-10
icse
jee mains
class-12
chemical kinetics
nuclear physics
+1
vote
1
answer
Determine the degree of dissociation of 0.05 M NH3 at 25°C in a solution of pH = 10.
asked
Apr 6, 2019
in
Chemistry
by
kratos
class-11
acids bases and salts
physical chemistry
ionic equilibrium
class-12
+3
votes
1
answer
Calculate the enthalpy change during the reaction. H2(g) + Br2(g) → 2HBr(g).
asked
Apr 6, 2019
in
Chemistry
by
kratos
neet
cbse
thermochemistry
class-11
aiims
physical chemistry
chemical thermodynamics
class-12
+1
vote
1
answer
The ionization constant of chloroacetic acid is 1.35 x 10^-3. What will be pH
asked
Apr 6, 2019
in
Chemistry
by
kratos
cbse
class-11
physical chemistry
ionic equilibrium
equilibrium
class-12
+1
vote
1
answer
In Freundlich isotherm, x/m ∝ P^a. Find the value of a from the following graph
asked
Apr 6, 2019
in
Chemistry
by
kratos
cbse
jee
physical chemistry
jee mains 2019
jee mains
class-12
+2
votes
0
answers
Bromine monochloride, BrCl decomposes into bromine and chlorine and reaches the equilibrium
asked
Apr 6, 2019
in
Chemistry
by
kratos
cbse
class-11
jee
physical chemistry
chemical reactions and equations
class-10
jee mains
equilibrium
class-12
chemical equilibrium
+3
votes
1
answer
When a rod of metal A is dipped in an aqueous solution of metal B (concentration of B^2+ ion being 1 M) at 25°C,
asked
Apr 5, 2019
in
Chemistry
by
kratos
class-11
physical chemistry
ionic equilibrium
mole and equivalent concept
dilute solutions
colligative properties
class-12
chemical equilibrium
+3
votes
1
answer
Potassium chromate is isomorphous to potassium sulphate (K2SO4 ) and it is found to have 26.78% Cr.
asked
Apr 5, 2019
in
Chemistry
by
kratos
class-12
class-11
physical chemistry
mole and equivalent concept
+3
votes
1
answer
For the following reaction at 298 K 2A + B → C ΔH = 400 kJ mol^-1 and ΔS = 0.2 kJ K^-1 mol^-1.
asked
Apr 5, 2019
in
Chemistry
by
kratos
neet
cbse
thermodynamic
class-11
physical chemistry
thermodynamics
class-12
+2
votes
1
answer
Which among the following gases absorb long wavelength infared radiation emitted from the earth'* surface ?
asked
Apr 5, 2019
in
Chemistry
by
kratos
structure of atom
class-11
physical chemistry
atomic physics
atomic structure
class-12
bitsat
+2
votes
1
answer
A compound forms hexagonal close packed structure. What is the total number of voids in 0.5 mol of it? How many of these are tetrahedral voids?
asked
Apr 5, 2019
in
Chemistry
by
kratos
cbse
jee
physical chemistry
solid state
jee mains
class-12
+1
vote
1
answer
Calculate the compressibility factor for SO2 , if 1 mole of it occupies 0.35 litre at 300 K and 50 atm pressure. Comment on the result.
asked
Apr 4, 2019
in
Chemistry
by
kratos
class-11
jee
physical chemistry
jee mains
gaseous state
class-12
states of matter
+3
votes
1
answer
If ΔH^0f of N2O = 82 kJ mol^-1 Bond energy of N ≡ N, N = N, O = O and N = O bonds is 946, 148, 498 and 607 kJ mol^-1 respectively.
asked
Apr 4, 2019
in
Chemistry
by
kratos
cbse
thermochemistry
class-11
jee
physical chemistry
jee mains
class-12
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