HIGH SCHOOL CHEMISTRY 25 PTS
Consider the following intermediate chemical equations.
3...
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Chemistry, 26.02.2021 17:50 4tazaouiamine1r
HIGH SCHOOL CHEMISTRY 25 PTS
Consider the following intermediate chemical equations.
3 equations. 1: upper C solid plus upper o subscript 2 gas right arrow upper C upper O subscript 2 gas Delta H 1 equals negative 393.5 kilojoules. 2: 2 upper C upper O gas plus upper O subscript 2 gas right arrow 2 upper C upper O subscript 2 gas Delta H 2 equals negative 566.0 kilojoules. 3: 2 upper H subscript 2 upper o gas right arrow 2 upper H subscript 2 gas plus upper O subscript 2 gas delta H 3 equals 483.6 kilojoules.
The overall chemical equation is Upper C (s) plus upper H subscript 2 upper O (g) right arrow upper C upper o (g) plus upper H subscript 2 (g).. To calculate the final enthalpy of the overall chemical equation, which step must occur?
~Reverse the first equation, and change the sign of the enthalpy. Then, add.
~Reverse the second equation, and change the sign of the enthalpy. Then, add.
~Multiply the first equation by three, and triple the enthalpy. Then, add.
~Divide the third equation by two, and double the enthalpy. Then, add.
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