Hess's Law ની ગણતરી કેવી રીતે કરવી
Hess's Law શું છે?
Hess's Law states that the total enthalpy change of a reaction is independent of the pathway taken — it depends only on the initial and final states. This allows calculation of ΔH for reactions that are difficult to measure directly.
પગલું દ્વારા પગલું માર્ગદર્શિકા
- 1Write the target reaction
- 2Identify a series of known reactions that sum to the target
- 3Reverse any reaction that needs to be reversed (change sign of ΔH)
- 4Multiply reactions by appropriate stoichiometric factors
- 5Sum all ΔH values
Worked Examples
ઇનપુટ
C + O₂ → CO₂ (ΔH=−393kJ) and 2CO + O₂ → 2CO₂ (ΔH=−566kJ)
પરિણામ
C + ½O₂ → CO: ΔH = −110kJ
Subtract half of second equation from first
ગણતરી માટે તૈયાર છો? મફત Hess's Law કેલ્ક્યુલેટર અજમાવી જુઓ
તેને જાતે અજમાવી જુઓ →