Rate determining step in nitration of benzene is
formation of NO2+
formation of carbocation
replacement of H atom
none of these.
The aqueous solution of which of the following salt will have the lowest pH ?
NaClO3
NaClO
NaClO4
NaClO2
Which ofthe following alkanes is optically active?
3-Methylhexane
Propane
2, 3, 4-Trimethylpentane
2-Methylbutane
Assertion : Na2SO4 is soluble in water while BaSO4 is not.
Reason : Lattice energy of BaSO4 exceeds its hydration energy.
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 Assertion is false but Reason is true.
Strongest acid among the following is
acetic acid
FCH2COOH
F2CHCOOH
F3CCOOH
D.
F3CCOOH
Fluorine is a highly electronegative element, it withdraws electron from the neighbouring atoms. Therefore, more is the number of fluorine atoms attached, greater will be the acidity of the molecules. e.g. FCH2COOH is more acidic than CH3COOH. Therefore, correct order of acidity is:
CF3COOH > CF2HCOOH > FCH2COOH > CH3COOH