Ionic EquilibriumMedium
Question
Which of the following solution will have pH close to 1.0 ?
Options
A.00 mL of (M/ 10) HCl + 100 mL of (M/10)NaOH
B.55 mL of (M/ 10) HCl + 45 mL of (M/10)NaOH
C.10 mL of (M/ 10) HCl + 90 mL of (M/10)NaOH
D.75 mL of (M/ 5) HCl + 25 mL of (M/5)NaOH
Solution
HCl + NaOH → NaCl + H2O
Mwq.at t = 0
= 15 = 5 0 0
Meq. after reaction = 10 0 5 5
∴ NHCl =
= 0.1 or 10-1
or [H+] = 10-1 ⇒ pH = - log 10-1 = 1
Mwq.at t = 0
= 15 = 5 0 0
Meq. after reaction = 10 0 5 5
∴ NHCl =
= 0.1 or 10-1 or [H+] = 10-1 ⇒ pH = - log 10-1 = 1
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