Question
Explain the structure of triple bond.
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Answer
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Distinguish between a sigma and a pi bond.
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Bond enthalpy $(\Delta\text{H}^\circ)/\text{kJ mol}^{-1}$ of C=O = 741; C-H = 414; H-O = 464; O=O = 498.
What is heat capacity? Write the derivation of relationship between c, and c
A compound on analysis found to contain following percentage composition:
$Na = 43.4\%, C = 11.4\%$ and $O = 45.3\%$. Determine the empirical and molecular formulae.
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Given: the relative molecular mass of the compound is $106$.
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Density of a gas is found to be $5.46 \mathrm{~g} / \mathrm{dm}^3$ at $27^{\circ} \mathrm{C}$ at 2 bar pressure. What will be its density at STP?
→How do you count for the following observations?
When concentrated sulphuric acid is added to an inorganic mixture containing chloride, we get colourless pungent smelling gas $HCl$, but if the mixture contains bromide then we get red vapour of bromine. Why?
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(a) What happens when benzene is treated with acetyl chloride in presence of $AlCl _3$ ?
(c) Classify the hydrocarbons according to the carbon-carbon bond.
(d) Arrange the following: $HCl , HBr , Hl , HF$ in order of decreasing reactivity towards alkenes.
(e) Why is $CH _2= CH - CH _2- Cl$ more easily hydrolysed than $CH _3- CH _2- CH _2- Cl$ ?
(f) Which of the two trans-but-2-ene or trans-pent-2-ene is non-polar?
(g) What are benzenoids?
→(a) What happens when benzene is treated with acetyl chloride in presence of $AlCl _3$ ?
(c) Classify the hydrocarbons according to the carbon-carbon bond.
(d) Arrange the following: $HCl , HBr , Hl , HF$ in order of decreasing reactivity towards alkenes.
(e) Why is $CH _2= CH - CH _2- Cl$ more easily hydrolysed than $CH _3- CH _2- CH _2- Cl$ ?
(f) Which of the two trans-but-2-ene or trans-pent-2-ene is non-polar?
(g) What are benzenoids?
The ionization constant of chloroacetic acid is $1.35 \times 10^{–3}$. What will be the pH of $0.1M$ acid and its $0.1M$ sodium salt solution?
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