IB DP Chemistry: SL复习笔记9.1.1 Oxidation & reduction
Oxidation & Reduction There are three definitions of oxidation and reduction used in different branches of chemistry Oxidation and reduction can be used to describe any of the following proces...
IB DP Chemistry: SL复习笔记8.3.3 Reducing Sulfur Oxide Emissions
Reducing Sulfur Oxide Emissions The removal of sulfur from fossil fuels can either take place pre-combustion or post-combustion The oxides of sulfur, SO2 and SO3, are both acidic and toxic gases S...
IB DP Chemistry: SL复习笔记8.3.2 Effects of Acid Deposition
Effects of acid deposition Effect on materials Acid deposition can react with metals and rocks (such as limestone) causing buildings and statues to get damaged The impact of acid deposition can be ...
城市绿洲学校插班生超级难考吗？
深圳城市绿洲学校是创办于2001年的民办九年一贯制双语学校，2008年成立了国际部。城市绿洲学校也是目前深圳唯一一所可以直升深国交的学校！城市绿洲学校插班生超级难考吗？ 招生对象 中（含港澳台）外籍学生，招...
IB DP Chemistry: SL复习笔记8.3.1 Acid Deposition
Acid Deposition What is acid deposition? Rain is naturally acidic because of dissolved CO2 which forms carbonic acid H2O (l) + CO2 (g) ⇌ H2CO3 (aq) Carbonic acid is a weak acid and dissociates in...
IB DP Chemistry: SL复习笔记8.2.8 Comparing Strong & Weak Acids
Comparing Strong & Weak Acids Strong and weak acids can be distinguished from each other by their: pH value (using a pH meter or universal indicator) Electrical conductivity Reactivity pH value...
IB DP Chemistry: SL复习笔记8.2.7 Strong & Weak Acids & Bases
Strong & Weak Acids & Bases Strong acids A strong acid is an acid that dissociates almost completely in aqueous solutions HCl (hydrochloric acid), HNO3 (nitric acid) and H2SO4 (sulfuric aci...
IB DP Chemistry: SL复习笔记8.2.6 pH Meters & Universal Indicator
pH Meters & Universal Indicator The most accurate way to determine the pH is by reading it off a pH meter The pH meter is connected to the pH electrode which shows the pH value of the solution ...
IB DP Chemistry: SL复习笔记8.2.5 Acid-Base Calculations
Acid-Base Calculations Using the relationships between pH, [H⁺] and [OH⁻] a variety of problems can be solved pH = - log [H+] and Kw = [H+] [OH-] Test your understanding on the following work...
IB DP Chemistry: SL复习笔记8.2.4 The Ionic Product of Water
The Ionic Product of Water pH of water An equilibrium exists in water where few water molecules dissociate into proton and hydroxide ions H2O(l) ⇌ H+(aq) + OH-(aq) The equilibrium constant for this...
IB DP Chemistry: SL复习笔记8.2.3 Interpreting pH
Interpreting pH The pH scale is a numerical scale that shows how acidic or alkaline a solution is The values on the pH scale go from 0-14 (extremely acidic substances have values of below 0) All ac...
IB DP Chemistry: SL复习笔记8.2.2 pH & [H⁺]
pH & [H⁺] The acidity of an aqueous solution depends on the number of H+ (H3O+) ions in solution The pH is defined as: where [H+] is the concentration of H+ in mol dm–3 The pH scale is a logari...
