Q 1159034814.     `pH` of two solutions:

`I. 50` ml of `0.2 M HCI + 50` ml of `0.2 M` `HA (K_a=1.0 × 10^(-5))` and

`II. 50` ml of `0.2 M HCI + 50` ml of `0.2 M NaA`

will be respectively

A

`3 and 1`

B

`0.70 and 2.85`

C

`1 and 3`

D

`1 and 2.85`

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