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Showing posts from November, 2015

Titration Calculation

 So... next set of never ending calculations is.... the titration calculation. Fun times right? Lets get this on the road! What is a titration? Simply put it is the neutralization of an acid by an alkali or vice versa to an immensely accurate scale - not flawless though mind, just saying (problematic I know but it is 2020!).  Be careful when measuring values in the burette, it needs to be read from the meniscus - this is the dip of the solution in the burette. Also just to annoy you that little bit more, you have to record and record and record and record and record and record and record.... oh sorry lost myself there! (it is true though!) ... until you get two results that are concordant with one another (within 0.1 of each other). So lets get down to the ever so enjoyable maths... Ca(OH)₂ + HNO₃ ---> Ca(NO₃)₂ + H₂O So here we have our lovely little equation. Now I recommend simply balancing this out - having issues? check this out - as balancing this out as soon as possibl

Key Chemistry terms

All those terms you might want to know, just for reference that is. Amount of substance -The means of counting atoms within a mole. Anhydrous -Lacking water molecules. Atomic number -The number of protons in an atom. Atomic orbitals -A region within an atom that can hold up to two electrons with opposite spins. Avogadro constant -The number of atoms per mole of the carbon 12 isotope (6.02x10 to the power of 23 mol -1) Compound -A substance formed from two or more chemically bonded elements. Dative bond -A shared pair of electrons which have been provided by one of the bonding atoms. Electronegativity -A measure of the attraction of a bonded atom for the pair of electrons in a covalent bond. Electron shielding -The repulsion between electrons in different inner shells. Empirical formula -Whole number ratio of atoms of each element in a molecule. First ionisation energy -The energy required to remove one electron from the outer shell of an element. Hydrogen bond -A strong di