Question

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4、5不懂

HCl → Ca(OH)₂ =26=²
UA
16. 在 0.10 M 之 HCl(aq) 25 mL 滴入 0.10 M NaOH(aq) 時,每一滴 NaOH(aq) 為 0.050 mL,
(log 2 = 0.30)
LCHED EM
(1)溶液未滴入 NaOH 時,pH 為多少? [HCI] = [H+] =0.1M
(2) 達當量點所需 NaOH(aq) 多少mL ? ①.1x25x1 = 0.1xVNoH x1
pH = 1/
V=25mL7
(3) 當溶液 pH = 1.7 時,已滴入NaOH(aq) 多少 mL?
(4) 當量點之前一滴時,溶液之 pH 值 ?
(5) 當量點之後一滴時,溶液之pH 值?
(6) 滴入若干 mL 時,溶液之 pH = 12.7 ?
2
ơi pH:2-03 ZIHI 2 M
0,1×25-0.10
2JtV
V=16.1
VNa DH=24.95mL
NH
(4)
[H²] =_0-1×25-0-1×2485
25+24.95
= 10²4 pH=4