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Ketul asked a question
Subject: Chemistry, asked on on 30/6/17
The enthalpy of neutralization of acetic acid and sodium hydroxide is -55.4KJ. What is the enthalpy of ionisation of acetic acid?
Jasmine Kaur asked a question
Subject: Chemistry, asked on on 5/10/17

Three thermochemical equations are given below:
 (i) Cgraphite+O2g →CO2(g) ; △rH°=x kJ mol-1(ii)  Cgraphite+12O2g →CO(g) ; △rH°=y kJ mol-1 (iii)  CO(g)+O2g →CO2(g) ; △rH°=z kJ mol-1
Based on the above equations, find out which of the relationship given below is correct: 
(1) x = y - z
​(2) z = x + y
 
Ragi Bhatt asked a question
Subject: Chemistry, asked on on 4/12/16
when 20ml of a strong acid is mixed to 20ml of strong alkali, the temp. rises by 10degree.
what wiould be the temp. rise if 200ml of each liquid are mixed??
1)5degree
2)10degree
3)0.5
4)0.10degree
Jasmine Kaur asked a question
Subject: Chemistry, asked on on 7/10/17
QUESTION NO 2

2.  When an ideal gas is compressed adiabatically and reversibly, the final temperature is

(1) Higher than the initial temperature
(2) Lower than the initial temperature
(3) The same as the initial temperature
(4) Dependent on the rate of compression 

 
Laiba asked a question
Subject: Chemistry, asked on on 15/4/18
For the formation of CH4 of delta U =-xKJ/mol then what will the value of delta H
Laiba asked a question
Subject: Chemistry, asked on on 15/4/18
Q. ∆STotal=-40kJ/mol×K∆Hsys=2000 kJ/mol T = 400 KFind out value of ∆Ssystem?
Vortega asked a question
Subject: Chemistry, asked on on 22/11/16
the enthalpy change for the reaction 2H2 + O2--> 2H2O is 574kJ . what is the heat of formation of water
Pranay And Prachi asked a question
Subject: Chemistry, asked on on 5/8/17
Find the work done when 1 mole of hydrogen expands isothermally from 15 to 50 litres against a constant pressure of 1atm at 25C
Ragi Bhatt asked a question
Subject: Chemistry, asked on on 6/12/16
in which case entropy increases??
stretching of rubber band
combustion of methane gas
diamond----> graphite
all of these
Henil asked a question
Subject: Chemistry, asked on on 11/1/17
 the efficiency of a carnot engine having source temperature 127c and sink 27 c is
Vortega asked a question
Subject: Chemistry, asked on on 23/11/16


Propane (C3H8) is used for heating water for domestic supply. assume that for 150kg of hot water supply per day must be heated from 10oC to 65oC. What moles of propane is used for heating this amount of water ?

(DeltacH for propane = -2050 KJ/mol , c for water = 4.184 x 10-3 )
Vortega asked a question
Subject: Chemistry, asked on on 23/11/16
derive the relation between change in internal energy and change in enthalpy for a system in which the reactants and products are gases
Yukta asked a question
Subject: Chemistry, asked on on 29/12/16

What is the meaning of thermodynamic function?
Rutika Vitthal Marne. asked a question
Subject: Chemistry, asked on on 13/3/17
if deltaH depends on temperature how can we define any reaction to be spontaneous or not on the basis of temperature only by gibbs energy also if any reaction is not carried out at constant pressure what value is to be put in in gibbs equation
Vatsala Hariharan asked a question
Subject: Chemistry, asked on on 14/5/18
An ideal gas expands in volume from 1 x 10^-3 m cube to 1x 10^-2 m cube at 300 K against a constant pressure of 1 x 10^5 N m^-2 . The work done is ? A) 270 kJ . B) -900 kJ . C) -900 J . D ) 900 kJ .
Jasmine Kaur asked a question
Subject: Chemistry, asked on on 7/10/17
QUESTION NO​ 22

22. When 1 g of anhydrous oxalic acid is burnt at 25°C, the amount of heat liberated is 2.835 kJ. ∆H combustion is (oxalic acid : C2H2O4) (1) -255.15 kJ                                       (2) -445.65 kJ(3) -295.24 kJ                                       (4) -155.16 kJ 
Jasmine Kaur asked a question
Subject: Chemistry, asked on on 5/10/17
QUESTION NO 11
Jasmine Kaur asked a question
Subject: Chemistry, asked on on 5/10/17
QUESTION NO 17

 Q17.
        Given that C+O2→CO2, ∆H°=-x KJ            2CO + O2→2CO2, ∆H°= -y KJ
               what is heat of formation of CO?

     (1) y-2x2                           (2) 2 x – y
      (3) y – 2x                            (4) 2x-y2
Jasmine Kaur asked a question
Subject: Chemistry, asked on on 7/10/17
QUESTION NO 47
Rutika Vitthal Marne. asked a question
Subject: Chemistry, asked on on 1/3/17
tis it true that no activation energy is needed at all for exothermic reaction since energy is liberated. It is been told to us as false if so there are many reaction in chemistry saying energy evolved in 1​st reaction is used to carry out 2nd​ reaction getting confused plzzz help
Yukta asked a question
Subject: Chemistry, asked on on 29/12/16
What is the difference between isothermal and adiabatic process? Please explain with examples.
Ragi Bhatt asked a question
Subject: Chemistry, asked on on 6/12/16
for an isothermal expansion of an ideal gas
W=0
​change in E=0
​q=0
change in V=0
 
Jasmine Kaur asked a question
Subject: Chemistry, asked on on 7/10/17
QUESTION NO 4
Abhishek Paul asked a question
Subject: Chemistry, asked on on 26/4/17
In alternative (c) why is it giving E1CB reaction even though Br- is not a strong base? Please explain in detail.​
Rutika Vitthal Marne. asked a question
Subject: Chemistry, asked on on 13/3/17
we define spontaneous reaction is reaction which takes place on its own without aid of any external reaction but also that endothermic reaction that absorbs energy AN EXTERNAL AID also spontaneous at higher temperature
Mehul Aswar asked a question
Subject: Chemistry, asked on on 4/12/16
PLEASE EXPLAIN 61 TH QUES
 
Mehul Aswar asked a question
Subject: Chemistry, asked on on 4/12/16
​​PLEASE EXPLAIN 58TH QUES
 
Krithika Elancheran asked a question
Subject: Chemistry, asked on on 6/2/17
​​determine the enthalphy of combustion of CH4 at 298 K if the following is given  C+O2=CO2 ; delta H=-393,H2+1+2(O2)=H2O;delta H=-285.8, CO2+2H2O=CH4+2O2;deltaH=890.3
Anubhav Das asked a question
Subject: Chemistry, asked on on 14/1/17
in zeroth law of thermodynamic can we state thermal equilibrium as dyanamic equlibrium?
​
Rutika Vitthal Marne. asked a question
Subject: Chemistry, asked on on 9/3/17
if i try to solve it with equation deltaG =deltaH-TdeltaS option 4 is correct but in same equation i put T=0 option 3 is correct getting confused
Jaya Gupta asked a question
Subject: Chemistry, asked on on 6/6/17
Test question
Mehul Aswar asked a question
Subject: Chemistry, asked on on 4/12/16
PLEASE EXPLAIN 56TH 
Abhishek Paul asked a question
Subject: Chemistry, asked on on 17/4/17
Question-​
Rutika Vitthal Marne. asked a question
Subject: Chemistry, asked on on 16/5/17
in Q. 52 the answer given is C but i am getting the answer is like A . explain why
Rutika Vitthal Marne. asked a question
Subject: Chemistry, asked on on 13/3/17
is it true that enthalpy of reaction is not same as heat of reaction
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