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A reaction in which a substance is broken down into 2 or more substances by heat. An example is the breakdown of calcium carbonate into carbon dioxide and calcium oxide.
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Lets say we have 0.89 mol dm-3 of CH3COOH, a weak acid, with a ka of 1.7X10^-5.We want to find Ph, but to do this we first need to know [H+] because PH = -log10[H+].Because CH3COOH is a weak acid, it only...
Covalent bonding happens when two molecules share a pair of electrons. For example in hydrogen chloride (HCl). Ionic bonding is when two oppositely charged ions are attracted to each other to form a la...
Due to the delocalisation of electrons in the benzene ring conferring more stability on the structure.
Answer: water, followed by hydrogen fluroide, ammonia and lowest is methane.
Explanation: First it helps to write the molecular formulae of these molecules and know their shape:
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