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A cylinder with fixed capacity of 67.2 lit contains helium gas at STP. The amount of heat needed to raise the temperature
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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
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1
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Calculate the enthalpy change during the reaction. H2(g) + Br2(g) → 2HBr(g).
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Apr 6, 2019
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Chemistry
by
kratos
neet
cbse
thermochemistry
class-11
aiims
physical chemistry
chemical thermodynamics
class-12
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1
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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.
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Apr 4, 2019
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Chemistry
by
kratos
cbse
thermochemistry
class-11
jee
physical chemistry
jee mains
class-12
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1
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Consider the ΔG°f and ΔH°f (kJ/mol) for the following oxides. Which oxide can be most easily decomposed to
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Mar 28, 2019
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Chemistry
by
kratos
jee main 2020
thermochemistry
class-11
upsee
processes of isolation of metals
jee
thermodynamics
jee mains
general principles
+2
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1
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The total heat of hydration of 1 mol of gas phase Li^+ ions and Cl^– ions is –865 kJ. The lattice energy
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Mar 26, 2019
in
Chemistry
by
kratos
thermochemistry
jee
jee mains
+2
votes
1
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The ΔHof for CO2(g),CO(g) and H2O(g) are - 393.5,- 110.5 and -241.8 kJ mol^-1 respectively.
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Mar 25, 2019
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Chemistry
by
kratos
neet
cbse
thermodynamic
thermochemistry
class-11
jee
aiims
thermodynamics
jee mains
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1
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A chemical process in which a substance reacts with oxygen to give *** heat is ...............
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Mar 23, 2019
in
Chemistry
by
kratos
class-8
thermochemistry
combustion and flame
class-7
chemistry in daily life
class-10
chemical reactions and equations
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1
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At 25°C, the standard enthalpy of formation of anhydrous sodium carbonate is –1130.9 kJ/mol,
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Mar 21, 2019
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Chemistry
by
kratos
physical chemistry
class-12
class-11
jee mains
thermochemistry
jee
cbse
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1
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Define specific heat.
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Mar 17, 2019
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Chemistry
by
kratos
cbse
thermochemistry
class-11
physical chemistry
class-12
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1
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To which one of the following reactions occurring at 25°C does the symbol ΔH°f[HNO3(l)] refer?
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Mar 13, 2019
in
Chemistry
by
kratos
thermochemistry
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1
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Calculate the amount of heat released when heat of neutralization is -57.0 kJ :
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Mar 13, 2019
in
Chemistry
by
kratos
cbse
thermochemistry
class-11
jee
physical chemistry
jee mains
class-12
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1
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Ozone (O3) in the atmosphere can be converted to oxygen gas by reaction with nitric oxide (NO).
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Mar 7, 2019
in
Chemistry
by
kratos
thermochemistry
jee
jee mains
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1
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The enthalpy of fusion of water is 1.435 kcal/mol.
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Mar 4, 2019
in
Chemistry
by
kratos
thermodynamics
neet
aiims
thermochemistry
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1
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The heat of solution of ammonium chloride is 15.2 kJ/mol. If a 6.134 g sample of NH4Cl is added to 65.0 mL
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Feb 27, 2019
in
Chemistry
by
kratos
thermochemistry
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1
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Assertion : The molecularity of the reaction H2 + Br2 = 2HBr is two. Reason : The order of this reaction is 3/2.
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Feb 24, 2019
in
Chemistry
by
kratos
neet
cbse
thermochemistry
class-11
jee
physical chemistry
aiims
chemical thermodynamics
jee mains
class-12
chemical kinetics
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1
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The heat of solution of LiCl is –37.1 kJ/mol, and the lattice energy of LiCl(*) is 828 kJ/mol. Calculate the total heat of hydration of 1 mol
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Feb 24, 2019
in
Chemistry
by
kratos
thermochemistry
jee
jee mains
+2
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1
answer
Calculate bond energy of C - H bond if ΔHc of CH4 is -891 kJ, ΔHc of C (*) is – 394 kJ, ΔHc of H2(g) is -286 kJ,
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Feb 21, 2019
in
Chemistry
by
kratos
neet
thermodynamic
thermochemistry
class-11
aiims
thermodynamics
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1
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Calcium oxide reacts vigorously with water to produce slaked lime. CaO(*) + H2O(l) → Ca(OH)2(aq)
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Feb 20, 2019
in
Chemistry
by
kratos
neet
thermochemistry
jee
alkali metals
class-10
jee mains
chemical reactions and equations
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1
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H2(g) + 1/2O2(g) → H2O(g) ΔfH = -242kJ mol^-1. Bond energy of H2 and O2 are 436 mol^-1 and 500 mol^-1 respectively.
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Feb 19, 2019
in
Chemistry
by
kratos
neet
thermochemistry
thermodynamic
class-11
aiims
jee
thermodynamics
jee mains
redox reactions
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1
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During volcanic eruptions, hydrogen sulfide gas is given *** and oxidized by air according to the following chemical equation:
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Feb 19, 2019
in
Chemistry
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kratos
earthquakes and volcanoes
p-block elements
thermochemistry
class-11
class-9
icse
indian geography
class-12
volcanoes
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