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Enthalpy of Decomposition of Hydrogen Peroxide
Peroxide Decomposition Enthalpy Relation
Those who want to know the decomposition enthalpy of hydrogen peroxide must first learn the formula of its reaction. Hydrogen peroxide decomposes, the formula is $2H_ {2} O_ {2} (l) \ longrightarrow 2H_ {2} O (l) + O_ {2} (g) $.
To find its decomposition enthalpy, you can follow Ghaith's law. This law states that the thermal effect of a chemical reaction is constant regardless of its route. Therefore, the reaction with known enthalpy changes can be found to calculate the decomposition enthalpy of hydrogen peroxide.
If the enthalpy change of water formation is known, the enthalpy change of hydrogen and oxygen is synthesized into water, $H_ {2} (g) +\ frac {1} {2} O_ {2} (g) \ longrightarrow H_ {2} O (l) $, and its enthalpy change is denoted as $\ Delta H_ {1} $. It is also known that the enthalpy change of hydrogen peroxide formation, $H_ {2} (g) + O_ {2} (g) \ longrightarrow H_ {2} O_ {2} (l) $, and its enthalpy change is denoted as $\ Delta H_ {2} $.
The enthalpy of hydrogen peroxide decomposition, $\ Delta H $, can be calculated from Gass's law. According to the reaction formula, 2 dollars\ times (\ Delta H_ {1} -\ Delta H_ {2}) $is the enthalpy change of the decomposition of hydrogen peroxide.
can also be measured by the method of heat. Set up an adiabatic device, hold the hydrogen peroxide solution, let it decompose, and measure the change in its temperature. From the data of heat capacity and temperature, according to $Q = mc\ Delta T $, the heat of the reaction can be calculated as $Q $. And knowing the amount of the substance in the reaction, the enthalpy of decomposition can be calculated.
When experimenting, you must be careful to check everything. The adiabatic heat of the device must be good, and the measurement data must be accurate, so that the enthalpy of decomposition of hydrogen peroxide obtained is reliable.
Those who want to know the decomposition enthalpy of hydrogen peroxide must first learn the formula of its reaction. Hydrogen peroxide decomposes, the formula is $2H_ {2} O_ {2} (l) \ longrightarrow 2H_ {2} O (l) + O_ {2} (g) $.
To find its decomposition enthalpy, you can follow Ghaith's law. This law states that the thermal effect of a chemical reaction is constant regardless of its route. Therefore, the reaction with known enthalpy changes can be found to calculate the decomposition enthalpy of hydrogen peroxide.
If the enthalpy change of water formation is known, the enthalpy change of hydrogen and oxygen is synthesized into water, $H_ {2} (g) +\ frac {1} {2} O_ {2} (g) \ longrightarrow H_ {2} O (l) $, and its enthalpy change is denoted as $\ Delta H_ {1} $. It is also known that the enthalpy change of hydrogen peroxide formation, $H_ {2} (g) + O_ {2} (g) \ longrightarrow H_ {2} O_ {2} (l) $, and its enthalpy change is denoted as $\ Delta H_ {2} $.
The enthalpy of hydrogen peroxide decomposition, $\ Delta H $, can be calculated from Gass's law. According to the reaction formula, 2 dollars\ times (\ Delta H_ {1} -\ Delta H_ {2}) $is the enthalpy change of the decomposition of hydrogen peroxide.
can also be measured by the method of heat. Set up an adiabatic device, hold the hydrogen peroxide solution, let it decompose, and measure the change in its temperature. From the data of heat capacity and temperature, according to $Q = mc\ Delta T $, the heat of the reaction can be calculated as $Q $. And knowing the amount of the substance in the reaction, the enthalpy of decomposition can be calculated.
When experimenting, you must be careful to check everything. The adiabatic heat of the device must be good, and the measurement data must be accurate, so that the enthalpy of decomposition of hydrogen peroxide obtained is reliable.
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