on my selected thermodynamic data i cant find delta H for SiCl4(L) (i can solve the reaction i just cant figure out what SiCl4(L) is.
nevermind i found it -687
It's -687.0 kJ/mol according to this site.
http://en.wikipedia.org/wiki/Silicon_tetrachloride_%28data_page%29
thanks helped with a different question
To find the value of ΔH for SiCl4(L), you will need to refer to reliable sources, such as thermodynamic databases or chemical reference books. These sources usually provide thermodynamic data for different compounds, including enthalpy values.
Here's how you can locate the appropriate thermodynamic data for SiCl4(L):
1. Start by searching for reputable thermodynamic databases online. Examples include NIST Chemistry WebBook, CRC Handbook of Chemistry and Physics, or specific chemical databases like the Beilstein database.
2. Once you find a suitable database, navigate to the search or compound lookup function. Enter "silicon tetrachloride" or "SiCl4" into the search bar.
3. Look for the entry that corresponds to silicon tetrachloride (SiCl4) in its liquid state (denoted by (L)). In some databases, you may need to check the phases or physical states provided for each compound to find the liquid state.
4. Once you find the SiCl4(L) entry, check for the value of ΔH or enthalpy of formation (ΔHf). The enthalpy of formation is typically given at a specified temperature, such as 25°C or 298 K.
If you are unable to find the specific value of ΔH for SiCl4(L) in some databases, it is possible that the data may not be available or may not be reported directly. In such cases, you might need to use thermodynamic relationships and known data for related compounds to calculate the ΔH for your reaction.