All Physical Chemistry Formulas in 20 Minutes | NEET 2025 Preparation with Nitesh Devnani!

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This video is a quick revision of important chemistry formulas, explained simply. Nitesh Sir covers key topics from physical chemistry to help students prepare for exams like NEET. Here's what’s included:

1) 𝐁𝐚𝐬𝐢𝐜 𝐂𝐨𝐧𝐜𝐞𝐩𝐭𝐬
○ 𝐀𝐯𝐞𝐫𝐚𝐠𝐞 𝐀𝐭𝐨𝐦𝐢𝐜 𝐌𝐚𝐬𝐬: Multiply each isotope’s mass by its percentage, add them, and divide by 100.
○ 𝐌𝐨𝐥𝐞𝐬: Use formulas like moles = mass/molar mass or moles = number of particles/Avogadro’s number.

2) 𝐂𝐨𝐧𝐜𝐞𝐧𝐭𝐫𝐚𝐭𝐢𝐨𝐧 𝐓𝐞𝐫𝐦𝐬
○ 𝐌𝐨𝐥𝐚𝐫𝐢𝐭𝐲 (𝐌): Moles of solute per liter of solution.
○ 𝐌𝐨𝐥𝐚𝐥𝐢𝐭𝐲 (𝐦): Moles of solute per kg of solvent.
○ 𝐌𝐨𝐥𝐞 𝐅𝐫𝐚𝐜𝐭𝐢𝐨𝐧: Ratio of moles of one component to total moles in the mixture.

3) 𝐓𝐡𝐞𝐫𝐦𝐨𝐝𝐲𝐧𝐚𝐦𝐢𝐜𝐬
○ 𝐅𝐢𝐫𝐬𝐭 𝐋𝐚𝐰: Energy change (ΔU) = Heat (q) + Work (w).
○ 𝐄𝐧𝐭𝐫𝐨𝐩𝐲 (Δ𝐒): Measures disorder in a system.

4) 𝐄𝐥𝐞𝐜𝐭𝐫𝐨𝐜𝐡𝐞𝐦𝐢𝐬𝐭𝐫𝐲
○ 𝐆𝐚𝐥𝐯𝐚𝐧𝐢𝐜 𝐂𝐞𝐥𝐥𝐬: Anode (oxidation) and cathode (reduction).
○ 𝐅𝐚𝐫𝐚𝐝𝐚𝐲’𝐬 𝐋𝐚𝐰: Mass deposited = (Current × Time × Atomic Mass) / (Charge × 96500).

5) 𝐂𝐡𝐞𝐦𝐢𝐜𝐚𝐥 𝐊𝐢𝐧𝐞𝐭𝐢𝐜𝐬
○ 𝐑𝐚𝐭𝐞 𝐋𝐚𝐰: Rate = k[A]^m[B]^n (k is the rate constant, m and n are reaction orders).
○ 𝐇𝐚𝐥𝐟-𝐋𝐢𝐟𝐞: Time for half the reactant to react (differs for zero-order, first-order reactions).
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6:48 - Thermodynamics
13:30 - Equilibrium
17:11 - Solution
19:36 - Electrochemistry
23:13 - Chemical Kinetics
26:26 - The End
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