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Sagot :
Enthalpy change is the difference between energy used and energy gained. The change in enthalpy of the liquid mercury is 0.0231 kJ.
What is the enthalpy change?
Enthalpy change is the difference between the energy used to break chemical bonds and the energy gained by the products formed in a chemical reaction.
The enthalpy change is given by,
[tex]\rm \Delta H_{rxn} = \rm q_{rxn}[/tex]
and,
[tex]\rm q = mc\Delta T[/tex]
Given,
Mass of the liquid mercury (m) = 11.0 gm
The specific heat of mercury (c) = 0.14 J per g per degree Celsius
Temperature change = 15 degrees Celsius
Enthalpy change is calculated as:
[tex]\begin{aligned} \rm q &= \rm mc\Delta T\\\\&= 11 \times 0.14 \times 15\\\\&= 23.1 \;\rm J\end{aligned}[/tex]
Therefore, 0.0231 kJ is the change in enthalpy.
Learn more about enthalpy change here:
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