How many enthalpy changes (ÄH’s) would be required to calculate the total enthalpy change when ice at 0.0oC is turned to steam at 100.0oC?

When a mixture of 13.0g of acetylene (C2H2) and 13.0g of oxygen gas is ignited, the resultant combustion reaction produces carbon dioxide and water.

What is the limiting reactant? any helper

q to melt ice @ 0C to liquid H2O @ 0C.

q to move T from zero C to 100 C
q to change liquid at 100 to steam at 100.

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To calculate the total enthalpy change from ice at 0.0oC to steam at 100.0oC, we need to consider several steps and enthalpy changes involved. Here's the breakdown:

1. Heating the ice from 0.0oC to its melting point:
- This step involves the enthalpy change of fusion, which is the heat required to convert ice at 0.0oC to water at 0.0oC.
- The enthalpy change of fusion is typically given as a constant value.

2. Heating the water from its melting point to its boiling point:
- This step involves the enthalpy change of heating, which is the heat required to raise the temperature of the water from 0.0oC to 100.0oC.
- The enthalpy change of heating is calculated using the specific heat capacity of water.

3. Vaporizing the water at its boiling point:
- This step involves the enthalpy change of vaporization, which is the heat required to convert water at 100.0oC to steam at 100.0oC.
- The enthalpy change of vaporization is typically given as a constant value.

Therefore, to calculate the total enthalpy change from ice at 0.0oC to steam at 100.0oC, we need two enthalpy changes: the enthalpy change of fusion and the enthalpy change of vaporization.