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Acids And PH

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卡片总数: 24 张•内容版本: v4•公开卡包•更新时间: 8/1/2026

卡片预览 (24 张)

#1
正面 (问题)

Acid

背面 (解答)

Proton donor

#2
正面 (问题)

Base

背面 (解答)

Proton acceptor

#3
正面 (问题)

Alkali

背面 (解答)

Base that’s soluble in water

#4
正面 (问题)

Acid base general equation

背面 (解答)

HA + B —> BH+ + A- A + B —> CA + CB

#5
正面 (问题)

Conjugate base

背面 (解答)

Base derived from acid

#6
正面 (问题)

Conjugate acid

背面 (解答)

Acid derived from a base

#7
正面 (问题)

Strong acid definition and example

背面 (解答)

Ions fully dissociated in water HCl —> Cl- + H+

#8
正面 (问题)

Weak acid definition and example

背面 (解答)

Ions slightly dissociated in water CH3CO2H —>< H+ + CH3CO2 constant k indicates dissociation level

#9
正面 (问题)

Mono/di/tri basic acid examples and dissociation trend

背面 (解答)

Mono hydrochloric HCl Di sulphuric H2SO4 Tri phosphoric H3PO4 1st dissociation strongest 3rd dissociation weakest

#10
正面 (问题)

pH definitions and equation

背面 (解答)

H+ conc pH = -log[H+] [H+] = 10^-pH

#11
正面 (问题)

Strong Vs weak acid trends in pH and [H+]

背面 (解答)

Strong, +pH 1, xconc 10 Weak, +pH 1, xconc 20

#12
正面 (问题)

Mono/di/tri strength compared to [acid]

背面 (解答)

Mono = Di >/= Tri >

#13
正面 (问题)

Kw equation and alkaline solutions

背面 (解答)

Kw = [H+] x [OH-] = 1x10^-14 298K, pure water [H+] = Kw/[OH-]

#14
正面 (问题)

Strong acid and alkali calculations

背面 (解答)

Mol H+/OH- before mixing Find excess conc Moles/new total vol Kw, find new H+ Use pH equ

#15
正面 (问题)

Amphoteric

背面 (解答)

Accept/donate protons simultaneously

#16
正面 (问题)

Ka expression and simplification

背面 (解答)

([H+][A-])/[HA] [H+]^2/[acid]

#17
正面 (问题)

Ka assumptions and their effect

背面 (解答)

Acid provides more H= than water, ignore water H+, [H+] = [A-], overestimate top Fails when [H+] is very small/close to Kw Little dissociation, most acid is HA, [acid] = [HA], overestimate bottom Fails when [H+] is very large/close to 1

#18
正面 (问题)

Titration curve marking points

背面 (解答)

Ph vs acid/alkali volume Start pH Flattish start Vertical/equivalence volume Vertical length Final pH (never reaches 14, initial acid dilutes)

#19
正面 (问题)

Describe the different titration curves

背面 (解答)

SS steep, steep SW steep, gentle WS gentle, steep, initial rapid WW gentle, gentle, initial rapid Di/tri protein, multiple equivalence/midpoints

#20
正面 (问题)

Calculating Ka from a titration curve

背面 (解答)

Half equ point A- = HA A-/HA = 1 Ka = [H+] (-log = p) PKa = pH

#21
正面 (问题)

Indicator compositions and equation

背面 (解答)

Weak acid and cb that are different colours Changes colour at equivalence point PKin = mid pH range Hin —>< in- + H+ PKin = constant Kin = ([in-][H+])/[Hin]

#22
正面 (问题)

Methyl orange range and exclusion

背面 (解答)

3.7 Weak acid

#23
正面 (问题)

Phenolphthalein range and exclusion

背面 (解答)

9.3 Weak base

#24
正面 (问题)

Buffer composition ad function

背面 (解答)

Resist pH change in industrial/biochemical systems Still changes pH a bit Weak acid + cb