The strained tetracyclic alkane is isomerize thermally to the cyclic alkene. The reaction involves
free radical
carbocation
carbanion
carbene.
How much amount of CuSO4.5H2O is required for liberation of 2.54 g of I2 when titrated with KI?
2.5 gm
4.99 gm
2.4 gm
1.2 gm
B.
4.99 gm
2CuSO4 + 2KI Cu2SO4 + K2SO4 + I2
Mass of 1 mole of CuSO4.5H2O is 249.5 gm. (Cu = 63.5 gm; S = 32; O = 16; H = 1; I =127)
Then 2 moles of CuSO4.5H2O = 499 gm
254 gm I2 requires 499 gm of CuSO4.5H2O
Therefore, 2.54 gm of I2 requires 4.99 gm of CuSO4.5H2O
Which of the following conditions is not correct for resonating structures?
The contributing structures must have the same number of unpaired electrons.
The contributing structures should have similar energies.
The contributing structures should be so written that unlike charges reside on atoms that are far apart.
The positive charge should be present on the electropositive element and the negative charge on the electronegative element.
Decreasing order of nucleophilicity is
OH- > NH > CH3O- > RNH2
NH > OH- > CH3O- > RNH2
NH > CH3O- > OH- > RNH2
CH3O- > NH > OH- > RNH2
Assertion : C(CH3)3-CH2-Br + NaOH C(CH3)2OH-CH2-CH3
Reason : It follows with formation of more stable carbocation.
If both assertion and reason are true and reason is the correct explanation of assertion
If both assertion and reason are true but reason is not the correct explanation of assertion
If assertion is true but reason is false
If both assertion and reason are false.