One mole of carbon (12.0 g) in the form of crystalline graphite is burned at 25◦c and 1.000 atm pressure to form co2(g). all of the heat produced is used to heat a 5100 g bath of liquid water, originally at 25◦c. what is the final temperature of the water bath? the heat of formation of co2(g) is −393.5 kj/mol and the specific heat of water is 4.18 j/g/◦c. answer in units of ◦c

T₂ = 43.46 °C  

Explanation:

Given that:

The heat of the formation of carbon dioxide = - 393.5 kJ/mol (Negative sign suggests heat loss)

It means that energy released when 1 mole of carbon undergoes combustion = 393.5 kJ = 393500 J

Heat gain by water = Heat lost by the reaction

Thus,    

For water:  

Mass of water  = 5100 g

Specific heat of water = 4.18 J/g°C  

T₁ = 25 °C  

T₂ = ?

Q = 393500 J

So,

T₂ = 43.46 °C  

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