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Enthalpy and Enthalpy ch..



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Q1. At constant pressure

(a) pdv=d(pv)
(b) dQ=du+d(pv)
(c) dQ=d(u+pv)
(d) all of the mentioned

Q2. Change in enthalpy of a system is due to heat supplied at

(a) constant volume
(b) constant pressure
(c) both at constant volume and pressure
(d) none of the mentioned

Q3. The enthalpy and internal energy are the function of temperature for

(a) all gases
(b) steam
(c) water
(d) ideal gas

Q4. Total enthalpy of a system H is given by

(a) H=h/m
(b) H=m/h
(c) H=mh
(d) none of the mentioned

Q5. The enthalpy of an ideal gas depends only on the temperature.

(a) true
(b) false
(c) Both acidolysis and aldehyde
(d) None of the mentioned

Q6. Heat transferred at constant pressure _____ the enthalpy of a system.

(a) decreases
(b) increases
(c) first decreases then increases
(d) first increases then decreases

Q7. Enthalpy is an intensive property of a system.

(a) true
(b) false
(c) Both acidolysis and aldehyde
(d) None of the mentioned

Q8. For an ideal gas, enthalpy becomes

(a) h=u-RT
(b) h=-u-RT
(c) h=u+RT
(d) h=-u+RT

Q9. In a constant volume process, internal energy change is equal to

(a) heat transferred
(b) work done
(c) zero
(d) none of the mentioned

Q10. The enthalpy of a substance(denoted by h), is defined as

(a) h=u-pv
(b) h=u+pv
(c) h=-u+pv
(d) h=-u-pv


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416 views

A Well Stoppered Thermos Flask Contains Some Ice Cubes. This Is An Example Of A

Modified 237 Year Ago Bhavna

416
Bhavna
237 Year Ago

A Well Stoppered Thermos Flask Contains Some Ice Cubes. This Is An Example Of A

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0 Answer
364 views

Three Moles Of An Ideal Gas Expanded Spontaneously Into Vacuum. The Work Done Will Be

Modified 5 Year Ago

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5 Year Ago

Three Moles Of An Ideal Gas Expanded Spontaneously Into Vacuum. The Work Done Will Be

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0 Answer
355 views

In Order To Decompose 9 G Water 142.5 KJ Heat Is Required. Hence, The Enthalpy Of Formation Of Water Is

Modified 5 Year Ago

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5 Year Ago

In Order To Decompose 9 G Water 142.5 KJ Heat Is Required. Hence, The Enthalpy Of Formation Of Water Is

0 votes
0 Answer
352 views

Changes In A System From An Initial State To The Final State Were Made By A Different Manner That ΔH Remains Same But Q Changes Because

Modified 237 Year Ago

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237 Year Ago

Changes In A System From An Initial State To The Final State Were Made By A Different Manner That ΔH Remains Same But Q Changes Because

0 votes
0 Answer
348 views

If W Is The Amount Of Work Done By The System And Q Is The Amount Of Heat Supplied To The System. Identify The Type Of The System

Modified 237 Year Ago

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237 Year Ago

If W Is The Amount Of Work Done By The System And Q Is The Amount Of Heat Supplied To The System. Identify The Type Of The System

0 votes
0 Answer
334 views

The Entropy Change Involved In The Isothermal Reversible

Modified 314 Year Ago

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314 Year Ago

The Entropy Change Involved In The Isothermal Reversible

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0 Answer
304 views

Calculate The Amount Of Heat Evolved When 500 Cm^3 Of 0.1 M HCl Is Mixed With 200 Cm^3 Of 0.2 M NaOH.

Modified 5 Year Ago Bhuv

304
Bhuv
5 Year Ago

Calculate The Amount Of Heat Evolved When 500 Cm^3 Of 0.1 M HCl Is Mixed With 200 Cm^3 Of 0.2 M NaOH.

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