Stochiochemistry deals with scale of atoms of elements in chemical formulation of elements, example scale atoms of C and O in molecule CO2. Stochiochemistry also deals with chemical formulation of chemical equation. Basics of stochiochemistry also concern of chemical equation and mole concepts.
What's chemical reaction?
Chemical reaction deals with chemical changing between A reacted with B. Example CO2, has resulted from reaction of atom C (solids) with O2 (gas) to be resulted CO2 (gas). There are many kinds of chemical reactions, they are :
1. Acid Base Reaction
2. Redox Reaction
3. Polymerize reaction
4. Complexometric reaction
5. etc
From those are chemical reactions, the keys that should we hold is Stochiochemistry. Stochiochemistry deals with chemical equation and mole concepts.
Example :
How many volume of HCl 0.05 M that's needed to be reacted 2,4 g Mg (Ar Mg = 24 g/mol)?
By using stochiochemistry,
1. we have to decide the correct chemical equation to be :
2. By using mole concepts we find the volume of HCl which is needed :
mole Mg = 2,4 grams : 24 grams/moles = o.1 moles
mole Mg ~ 2 moles HCl = 0.2 moles
Volume HCl = 0.2 moles : 0.05 moles/L = 4 L
So, It needs 4 L of HCl 0.05 M to be reacted with 2,4 grams of Mg.
2 comments:
Pak, bagaimana dengan reaksi asam basa? bisa minta contoh reaksinya sekaligus cara perhitungannya?
Sorry baru balas, untuk asam-basa bisa dilihat di article tentang Acid Base Titration Buffer
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