Which of the following solution will have pH closer to 1.0 ?

1.	Which of the following solution will have pH closer to 1.0 ?
Answer» 100 ml of (M/ to ) HCl +100 ml of (M/10) NaOH 55 ml of (M/to) HCl +45ml of (M/10) NaOH 10 ml of (M/10)HCl+90 ml of (M/10) NaOH 75 ml of (M/5) HCl +25ml of (M/5) NaOH SOLUTION :` N_aV_a =(1)/(5) xx 75 =15 ,N_bV_b =(1)/(5)xx 25 =5` if `N_aV_agt N_bV_b` ` [H^(+)] =(N_aV_a- N_bV_b)/(V_a+V_b) =(15-5)/(100)=0.1 therefore pH =1`

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