## Thermodynamics Quiz-16

Dear Readers,
Thermodynamics is a very important branch of both chemistry and physics. It deals with the study of energy, the conversion of energy between different forms and the ability of energy to do work. Thermodynamics is an important chapter for JEE Mains, JEE Advance NEET and many others exams. As this chapter is present in both chemistry and physics and there is only a minor difference between them hence it becomes more important topic. It is not a tough topic, it only requires practice. This topic has been given good weightage in all engineering exams. So don't skip this and prepare well. All the best !.

Q1. Given that C(g) + 4H(g) → CH4(g);   Î”H = −166kJ. The bond energy C − H will be:
•  −416 kJ/mol
•  −41.6 kJ/mol
•  832 kJ/mol
•  None of these
Solution:-
Bond-energy of C − H bond = −166/4
= −41.5 kJ/mol

Q2. If S° for H2, Cl2 and HCl are 0.13, 0.22 and 0.19 kJ K−1 mol−1 respectively. The total change in standard entropy for the reaction, H2 + Cl2 → 2HCl is:
•  30 J K−1 mol−1
•  40 J K−1 mol−1
•  60 J K−1 mol−1
•  20 J K−1 mol−1
Solution:-
Î”S = SP − SR
= (2×0.19)−0.13−0.22 = 0.03 kJ K−1 mol−1
= 30 J K−1 mol−1

Q3. Hess law is applicable for the determination of heat of
•  Reaction
•  Formation
•  Transition
•  All of these
Solution:-
All of these

Q4. The Kirchhoff’s equation gives the effect of ...... on heat of reaction.
•  Pressure
•  Temperature
•  Volume
•  Molecularity
Solution:-
Kirchhoff’s equation is : Î”H2 − Î”H1 = Î”Cp(T2 − T1)

Q5. The enthalpy change for the following reaction, NaOH(aq) + HCl(aq) → NaCl(aq) + H2(l) is −57 kJ. Predict the value of the enthalpy change in the following reaction : Ba(OH)2 + H2SO4(aq) → BaSO4(s) 2H2O(l)
•  −57 kJ
•  −76 kJ
•  −114 kJ
•  −228 kJ
Solution:-
Two equivalent of each are used.

Q6. From the reaction Pwhite → Pred; Î”H = −18.4 kJ it is following that :
•  Red P is readily formed from white P
•  White P is readily formed from red P
•  White P cannot be converted to red P
•  White P can be converted into red P and red P is more stable
Solution:-
Energy of red P is lesser than white P and thus, red P is more stable.

Q7. Heat evolved in the reaction, H2 + Cl2 → 2HCl is 182 kJ. Bond energies of H − H and Cl − Cl are 430 and 242 kJ/mol respectively. The H − Cl bond energy is :
•  245 kJ/mol
•  427 kJ/mol
•  336 kJ/mol
•  154 kJ/mol
Solution:-
Î”H = −2×eH−Cl + eH−H + eCl−Cl
∴   182 = −2×a + 430 + 242
∴     a = 245 kJ/mol

Q8. Heat of neutralization of a strong acid and a strong base is equal to Î”H of :
•  H+ + OH → H2O
•  H2O + H+ → H3O+
•  2H2 + O2 → 2H2O
•  CH3COOH + NaOH → CH3COONa + H2O
Solution:-
Heat of neutralisation is also defined as the heat of formation of H2O from H+ and OH ions.

Q9. The enthalpy of vaporization of a liquid is 30 kJ/mol and entropy of vaporization is 75 J/mol. The boiling point of liquid at 1 atm is :
•  250 K
•  400 K
•  450 K
•  600 K
Solution:-
Tb = Î”H / Î”S = 400 K

Q10. The apparatus generally used for measuring heat changes is:
•  Voltameter
•  Voltmeter
•  Calorimeter
•  Coulometer
Solution:-
Heat measurements are made in calorimeter usually made of copper.

## Want to know more

Please fill in the details below:

## Latest NEET Articles\$type=three\$c=3\$author=hide\$comment=hide\$rm=hide\$date=hide\$snippet=hide

Name

Admissions,1,Alternating Current,60,AP EAMCET 2020,1,Basic Maths,2,BCECE 2020,1,best books for iit jee,2,best coaching institute for iit,1,best coaching institute for iit jee preparation,1,best iit jee coaching delhi,1,best iit jee coaching in delhi,2,best study material for iit jee,4,BITSAT Registration 2020,1,Blog,62,books for jee preparation,1,books recommended by iit toppers,3,Capacitance,3,CBSE,1,CBSE accounts exam,1,CBSE boards,1,CBSE NEET,9,cbse neet 2019,3,CBSE NEET 2020,1,cbse neet nic,1,Centre of Mass,2,Chemistry,58,Class 12 Physics,15,coaching for jee advanced,1,coaching institute for iit jee,2,Collision,2,COMEDK UGET 2020 Application Form,1,COMEDK UGET 2020 Exam Form,1,COMEDK UGET news,1,CUCET 2020,2,Current Electricity,4,CVR college,1,Digestion and Absorption Notes PDF,1,Electromagnetic Induction,3,Electronics,1,Electrostatics,3,Energy,1,Engineering & Medical,1,Fluid Mechanics,4,Gravitation,2,GUJCET 2020 Application Form,1,Heat,4,iit admission,1,iit advanced,1,iit coaching centre,3,iit coaching centre in delhi,2,iit coaching classes,2,iit coaching in delhi,1,iit coaching institute in delhi,1,iit entrance exam,1,iit entrance exam syllabus,2,iit exam pattern,2,iit jee,5,iit jee 2019,3,iit jee advanced,2,iit jee books,3,iit jee coaching,2,iit jee exam,3,iit jee exam 2019,1,iit jee exam pattern,3,iit jee institute,1,iit jee main 2019,2,iit jee mains,3,iit jee mains syllabus,2,iit jee material,1,iit jee online test,3,iit jee practice test,3,iit jee preparation,6,iit jee preparation in delhi,2,iit jee preparation time,1,iit jee preparation tips by toppers,2,iit jee question paper,1,iit jee study material,3,iit jee study materials,2,iit jee syllabus,2,iit jee syllabus 2019,2,iit jee test,3,iit preparation,2,iit preparation books,5,iit preparation time table,2,iit preparation tips,2,iit syllabus,2,iit test series,3,IITJEE,100,Important Biology Notes for NEET Preparation,1,IPU CET,1,JEE Advanced,83,jee advanced exam,2,jee advanced exam pattern,1,jee advanced paper,1,JEE Books,1,JEE Coaching Delhi,3,jee exam,3,jee exam 2019,6,JEE Exam Pattern,2,jee exam pattern 2019,1,jee exam preparation,1,JEE Main,85,jee main 2019,4,JEE Main 2020,1,JEE Main 2020 Application Form,2,JEE Main 2020 news,2,JEE Main 2020 Official Answer Key,1,JEE Main 2020 Registration,1,JEE Main 2020 Score,1,JEE Main application form,1,jee main coaching,1,JEE Main eligibility criteria,3,jee main exam,1,jee main exam 2019,3,jee main online question paper,1,jee main online test,3,JEE Main Paper-2 Result,1,jee main registration,2,jee main syllabus,2,JEE mains 2020,1,jee mains question bank,1,jee mains test papers,3,JEE Mock Test,2,jee notes,1,jee past papers,1,JEE Preparation,2,jee preparation in delhi,1,jee preparation material,4,JEE Study Material,1,jee syllabus,6,JEE Syllabus Chemistry,1,JEE Syllabus Maths,1,JEE Syllabus Physics,1,jee test series,3,KCET - 2020,1,Kinematics,1,Latest article,5,Latest Articles,61,Latest News,34,latest news about neet exam,1,Laws of Motion,2,Magnetic Effect of Current,3,Magnetism,3,MHT CET 2020,2,MHT CET 2020 exam schedule,1,Modern Physics,1,NCERT Solutions,15,neet,3,neet 2019,1,neet 2019 eligibility criteria,1,neet 2019 exam date,2,neet 2019 test series,2,NEET 2020,2,NEET 2020 Application Form,1,NEET 2020 Eligibility Criteria,1,NEET 2020 Registration,1,neet application form,1,neet application form 2019 last date,1,Neet Biology Syllabus,1,Neet Books,3,neet eligibility criteria,3,neet exam 2019,7,neet exam application,1,neet exam date,1,neet exam details,1,neet exam pattern,6,neet exam pattern 2019,2,neet examination,1,neet mock test 2019,1,Neet Notes,3,Neet Online Application Form,3,neet online test,2,neet past papers,1,neet physics syllabus,1,neet practice test,2,NEET preparation books,1,neet qualification marks,1,NEET question paper 2019,1,neet question papers,1,neet registration,1,Neet Study Material,3,neet syllabus,6,neet syllabus 2019,5,NEET Syllabus 2020,1,neet syllabus chemistry,1,neet syllabus for biology,1,neet syllabus for physics,1,neet test series,1,neet ug 2019,2,news,5,online study material for iit jee,1,Optical Instruments,1,Physics,110,physics books for iit jee,1,Power,1,Practical Physics,1,Quiz,5,Ray Optics,1,Rotational Motion,3,SHM,3,Simple Harmonic Motion,3,study materials for iit jee,1,Study Notes,110,study notes for iit jee,1,Thermodynamics,4,TS EAMCET Notification,2,Units and Dimensions,1,UPSEE 2020,1,UPSEE 2020 Application Form,2,UPSEE EXAM,1,Vectors,2,VITEE Application form,1,Wave Motion,3,Wave Optics,1,WBJEE 2020 Admit Card,1,WBJEE 2020 Answer Key,1,Work,1,
ltr
item
BEST NEET COACHING CENTER | BEST IIT JEE COACHING INSTITUTE | BEST NEET, IIT JEE COACHING INSTITUTE: Thermodynamics Quiz-16
Thermodynamics Quiz-16
https://1.bp.blogspot.com/-fpcfajjeSso/X5lz88x_F1I/AAAAAAAAB4k/hh4Qav2BCvggGzpNZAcYWo6nx2BxJSPFgCLcBGAsYHQ/w640-h336/Quiz%2BImage%2B20%2B%252812%2529.jpg
https://1.bp.blogspot.com/-fpcfajjeSso/X5lz88x_F1I/AAAAAAAAB4k/hh4Qav2BCvggGzpNZAcYWo6nx2BxJSPFgCLcBGAsYHQ/s72-w640-c-h336/Quiz%2BImage%2B20%2B%252812%2529.jpg
BEST NEET COACHING CENTER | BEST IIT JEE COACHING INSTITUTE | BEST NEET, IIT JEE COACHING INSTITUTE
https://www.cleariitmedical.com/2020/10/thermodynamics-quiz-6.html
https://www.cleariitmedical.com/
https://www.cleariitmedical.com/
https://www.cleariitmedical.com/2020/10/thermodynamics-quiz-6.html
true
7783647550433378923
UTF-8