When lanthanides (Ln) react with carbon at high temperatures (2773K), they form products with a general formula of \( {LnC}_2 \), a carbide.
Thus, the correct answer is (D).
The vapour pressure of H\(_2\)O at 323K is 95 mm of Hg. 176g of sucrose (Molar mass = 342 gmol\(^{-1}\)) is added to 900g of H\(_2\)O at 323K.
The vapour pressure of solution is about
If $ | \vec{a} | = 3 $, $ | \vec{b} | = 2 $, then find $ (3\vec{a} - 2\vec{b}) \cdot (3\vec{a} + 2\vec{b}) $.