Chemistry Hydrocarbon

$C{H}_4+2O_2\to C{O}_2+2H_{2}O$

Mole $\frac{100}{16}\frac{208}{32}$

$\begin{array}{l}\downarrow \downarrow \\ 6.256.5(Here{O}_{2}isthelimitingreagent)\end{array}$  

Hence mole of CO₂ formed = $\frac{6.5}{2}$  

And wt of CO₂ in gm = $\frac{6.5}{2}*44=143g$  

Bromine water test is a technique used for the identification of alkynes. Alkynes on coming in contact with bromine turn them colourless from reddish brown color. This happens because of the addition reaction which takes place due to the triple carbon bonds of alkynes.

Tautomerism is a dynamic equilibrium between 2 isomers, also known as tautomers, where a compound exists in 2 different structures. The most common form is keto enol tautomerism. It is mainly of two types:

• Keto Form: Contains a C=O (carbonyl) group
• Enol Form: Contains a C=C double bond and an –OH group

Kolbe's electrolysis is a process where an aqueous solution of sodium and potassium salt undergoes electrolysis to lead to the formation of a symmetrical alkene. Principle of this technique is that at anode, the carboxylate ion undergoes oxidation and loses carbon dioxide (CO? ). Similarly, at cathode the water decomposes to form hydrogen gas. The alkyl radicals formed in these two cases combine to form alkenes.

Sodium ethanoate is CH? COONa and given process is soda-lime decarboxylation.

CH? COONa + NaOH - (CaO)-> CH? + Na? CO?

Methane is obtained having molar mass 16. Two moles would be 32 g.

Total no. of e?
? Fe → 3d?4s², Fe? ² → 3d? 24
? Mn → 3d?4s², Mn? ² → 3d? 23

Noble gases have weak dispersion forces so their melting and boiling point are very low.

Aromatization is the procedure of converting an aliphatic compound into a non aromatic compound using a catalyst. This is usually done through the pathwya of techniques like dehydrogenation where a non aromatic compound is converted into an aromatic compound. Examples: converting cyclohexane to benzene, androgens to estrogens, etc. The final product always contains a benzene-like ring structure which follows Hückel's rule.

Formaldehyde 2-methyl propanal

Cyclohepta-1, 3, 5-triene is not aromatic as one carbon is saturated (sp³).