Скачать или смотреть Heat of Formation of Benzene from Combustion Data | Hess Law | JEE Main 2025

Welcome to Padho Likho JEE!
In this video, we solve a JEE Main 2025 Chemistry Previous Year Question (PYQ) based on Hess’s law and enthalpy of formation.

📌 Exact Question (JEE Main 2025 – 28th January Evening Shift):

Consider the following data:
Heat of formation of CO₂(g) = −393.5 kJ mol⁻¹
Heat of formation of H₂O(l) = −286.0 kJ mol⁻¹
Heat of combustion of benzene = −3267.0 kJ mol⁻¹

The heat of formation of benzene is ______ kJ mol⁻¹ (nearest integer).

🧠 EXAM STEP used in this video:
• Write balanced combustion equation of benzene
• Apply Hess’s law correctly
• Use formation enthalpies of CO₂ and H₂O
• Avoid SIGN TRAP in thermochemistry
• Convert combustion data into formation enthalpy

This is a COMMON MISS question due to:
• Incorrect balancing
• Wrong sign usage
• Mixing formation and combustion enthalpies

📘 Exam: JEE Main 2025
📘 Subject: Chemistry
📘 Chapter: Thermodynamics / Thermochemistry

This video will help you:
✔ Master Hess’s law numericals
✔ Avoid sign convention mistakes
✔ Save time in the exam
✔ Secure SAFE +5 marks

Watch till the end for the FINAL CHECK most students skip.

If you found this video helpful, please like, share, and subscribe to our channel for more content on JEE and NEET preparation.
Got questions or need further clarification? Leave a comment below, and we’ll be happy to help!
#padholikhojee
#JEEMain2025
#JEEChemistry
#HessLaw
#Thermochemistry
#HeatOfFormation
#Benzene
#JEEMainPYQ
#PadhoLikhoJEE