IB DP Chemistry: SL復習筆記5.3.1 Bond Enthalpy
Bonds & Energy When bonds are broken or made?enthalpy changes?take place A chemical bond is a force of attraction between two atoms Breaking the bond requires the input of energy it is therefor...
IB DP Chemistry: SL復習筆記5.2.4 Using ?Hf° to Find Enthalpy Changes
Using ?Hf° to Find Enthalpy Changes Standard Enthalpy of Formation is defined as “The enthalpy change when one mole of a compound is formed from its elements under standard conditions” We can use e...
美國生活成本最昂貴的十個州有哪些？
全球高等教育80%以上的優質資源在歐美國家，而單美國就占了相當大一部分，美國有全世界一流的大學，這也是很多國際生選擇去美國留學的重要原因。隨著國內留美孩子的逐年遞增，很多留學家庭對于留美的費用也非常關...
IB DP Chemistry: SL復習筆記5.2.3 Using Hess's Law - Equations
Hess's Law using Equations We can use Hess’s Law to solve unknown enthalpy changes by combining equations This requires a methodical step-by-step approach It is necessary to identify how the given ...
IB DP Chemistry: SL復習筆記5.2.2 Using Hess's Law - Cycles
Hess's Law using Cycles There are two common methods to solving Hess's Law problems, using cycles and using equations To be successful in using cycles you need to follow carefully a step-by-step pl...
IB DP Chemistry: SL復習筆記5.2.1 Hess's Law
Hess's Law In 1840, the Russian chemist Germain Hess formulated a law which went on to be known as?Hess’s Law This went on to form the basis of one of the laws of thermodynamics. The first law of t...
IB DP Chemistry: SL復習筆記5.1.4 Calorimetry Experiments
Calorimetry Experiments There are two types of calorimetry experiments you need to know for IB Chemistry: Enthalpy?changes of?reactions in solution Enthalpy?changes of?combustion In both cases you ...
IB DP Chemistry: SL復習筆記5.1.3 Calorimetry
Calorimetry Measuring enthalpy changes Calorimetry?is a technique used to measure changes in enthalpy of chemical reactions A?calorimeter?can be made up of a?polystyrene drinking cup, a?vacuum flas...
IB DP Chemistry: SL復習筆記5.1.2 Standard Enthalpy Change
Standard Enthalpy Change Standard conditions To compare the changes in enthalpy between reactions, all thermodynamic measurements are made under?standard?conditions These?standard conditions?are: A...
