Phenyl amine (C6H5NH2) is a weak base found in aromatic compounds. It is used to form a variety of dyes for natural painting (coloring) during traditional ceremony. Calculate the pH and [H+] of this weak base from red dye found in seeds of a tree. The concentration of phenyl amine is 0.20 M and Kb value is 7.3x10-4. [Hint: Retain 0.20 M in your calculation]
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In organic chemistry, the phenyl group or phenyl ring is a cyclic group of atoms with the formula C6H5. Phenyl groups are closely related to benzene and can be viewed as a benzene ring, minus a hydrogen, which may be replaced by some other element or compound to serve as a functional group. Phenyl groups have six carbon atoms bonded together in a hexagonal planar ring, five of which are bonded to individual hydrogen atoms, with the remaining carbon bonded to a substituent. Phenyl groups are commonplace in organic chemistry.[1] Although often depicted with alternating double and single bonds, phenyl groups are chemically aromatic and have equal bond lengths between carbon atoms in the ring.
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