1.

The pH of a solution obtained by mixing 50 mL of 0.2 MHCl with 50 mL of 0.20 M CH_(3) C O OH is

Answer»

`0.30`
`0.70`
`1.00`
`2.00`

Solution :Acetic acid being a weak acid ionizes to a SMALL extent Its ionization is further suppressed in the presence of HCL. Hence, `H^(+)` ions are obtained MAINLY from HCl.
50 ML of 0.2 M HCl=`50xx0.2` millimoles
= 10 millimoles
Volume ofsolution after mixing = 100 mL
`:.` MOLAR conc.of HCl `=(10)/(100)=0.1M = 10^(-1)M`
`:. pH=1`


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