1.

A complex of cobalt with ammonia is analyzed for determining its formula, by titrated it against a standardized acid as follows : Co(NH_(3))_(x) Cl_(3) ( aq) + HCl rarr NH_(3)^(+)(aq) + Co^(3+) (aq) + Cl^(-) ( aq)

Answer»

Solution :The balanced chemical REACTION is `:`
`CO(NH_(3))_(X) Cl_(3) + x HCl rarr xNH_(4) ^(+) +o^(3+) + ( x+ 3) Cl^(-)`
`(1.58)/( 165.5+ 17x) " " ( 1.58x)/( 165.5 + 17x) " " (1.58(x+3))/( 165.5 + 17x)`
`rArr ( 1.58x)/( 165.5+ 17x) = ( 23.63 xx 1.5 )/( 1000)`
= moles of HCl , x = 6
mole of AGCL `= ((x+ 3 ) xx 1.58 )/( 165.5 + 17x)`


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