Question
Explain various methods to form alkene.

Answer

SELF

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How is molecular orbital different from atomic orbital? Give electronic configuration of:
  1. $\text{H}^+_2,$
  2. $\text{Li}_2$
  3. $\text{B}_2,$
  4. $\text{C}_2.$
Calculate their bond orders and predict their paramagnetic behaviour.
Ozone is a toxic gas and is a strong oxidising agent even then its presence in the stratosphere is very important. Explain what would happen if ozone from this region is completely removed?
Sodium carbonate, $Na_2CO_3$ can be obtained by heating sodium hydrogen carbonate, $NaHCO_3​​​​​​​$​​​​​​​ as $2NaHCO_3(s) → Na_2CO_3(s) + H_2O(g) + CO_2(g).$
The essential data are,
 
$NaHCO_3(s)$
$Na_2CO_3(s)$
$CO_2(g)$
$H_2O(g)$
$\ \ \ \ \Delta_\text{f}\text{H}^\circ\$\text{kJ mol}^{-1})$
$-947.7$
$-1130.9$
$-393.51$
$-241.82$
$\ \ \ \ \ \text{S}^\circ_\text{m}\$\text{J mol}^{-1})$
$102.1$
$136$
$188.83$
$213.74$
Calculate the temperature above which $NaHCO_3$ decomposes to give products at 1 bar.
Explain the important aspects of resonance with reference to the $\text{CO}^{2-}_3$− ion.
Calculate the equilibrium constant for the following equilibrium system at 1120K. $\text{C}(\text{s})+\text{CO}_2(\text{g})+2\text{Cl}_2\stackrel{\text{K}_\text{p}}{\rightleftharpoons}2\text{COCl}_2(\text{g})$ Given the following equations and equilibrium constants: $\text{CO}(\text{s})+\text{Cl}_2(\text{g})\rightleftharpoons\text{COCl}_2(\text{g})$ $\text{Kp}_1 = 6.0 \times 10-3 \dots(1)$ $\text{CO}(\text{s})+\text{Cl}_2(\text{g})\rightleftharpoons\text{CO}_2(\text{g})$$\text{Kp}_2 = 1.3 \times 1014 \dots(2)$
Calculate the moles of NaOH required to neutralize the solution produced by dissolvingg 1.1g $P_4O_6$ in water. Use the following reactions:
$P_4O_6 + 6H_2O \rightarrow 4H_3PO_3$
$2NaOH + H_3PO3 \rightarrow Na_2HPO_3 + 2H_2O$
($Atomic\ mass/ g\ mol^{-1}; P = 31, O = 16$)
$2.9g$ of a gas at $95^\circ C$ occupied the same volume as $0.184g$ of dihydrogen at $17^\circ C$, at the same pressure. What is the molar mass of the gas?
Explain why alkyl groups act as electron donors when attached to a $\pi$ system.
Analyse the modern classification of organic compounds.
Prove that product of $K _{ a }$ of acid and $K _{ b }$ of base is equal to $K_w$.