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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Shweta Thakur posted an Question
September 27, 2020 • 23:37 pm
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30 points
30 points
- IIT JAM
- Chemistry (CY)
Plz check this first question i have solved.....and plz solve second be alorimeter rises from 294-05 k to 300-78 k. if he
1 A 1.250 g sample of octane (CgH18) 1s burned in excess of oxygen in a bomb calorimeter. The temperature Cebe alorimeter rises from 294-05 K to 300-78 K. If heat capacity of the calorimeter is/8.93 kJR find the heat transferred to the calorimeter. Also calculte the enthalpy combustion of the sample of Octane. When 20-0 gof ammonium nitrate (NH4NO3) is dissolved in 125 g of water in a coffee-cup calorimeter,the temperature falls from 296-5 K to 286.4 K. Find the value of q for the calorimeter.
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Priyanshu kumar Best Answer
2nd one
Did you match your answer for first one??
sir book main n they have written answer for enthalpy but that is wrong ye enthalpy mera internal energy aa rha
aap check kro solu. mera
enthalpy of combustion yha internal energy hoga
so internal energy which you got is right
....sir internal energy is heat released during combustion per mole but
and enthalpy is u + Ng RT
plz check
book main minus sign bhi no lgaaya
shweta heat or enthalpy of combustion at constant volume is nothing but internal energy change
And as heat evolved so take negative sign
your process is right...did you match it??
check 1st question again ...hint given below
answer to Shi hai but inhone usko enthalpy Ka naam de diya
enthalpy inhone nikalna hi nahi
sahi hai tmhara process
ok