The last step for balancing a chemical equation is to add the State Symbols
There are 4 types of State Symbols that can be used, namely:
(s) –> represents a Solid (including Precipitates that are insoluble in water)
(l) –> represents a Liquid (including Molten Compounds)
(g) –> represents a Gas (including Water Vapour & Steam)
(aq) –> represents an Aqueous Solution (i.e. substances that are soluble in water)
Example #1:
2Na(s) + Cl2(g) à 2NaCl(aq)
Example #2:
Mg(s) + H2SO4(aq) à MgSO4(aq) + H2(g)
Hope you find this useful to you.
Remember to leave me your comments. I love to hear from you! =)
Related Articles:
- O Levels Chemistry Questions – Mole Calculations / Mole Concepts
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- O Level Chemistry – Strategies to Predict Products of Electrolysis for Aqueuous Solutions
- O Level Chemistry – Determination of Ionic Equation & Spectator Ions
- O Level Chemistry: Assigning State Symbols in Chemical Equations (Exercise)
is useful but there are still space for improvement. for example like putting up qns for others to try or some video, for those who has problem understanding the notes that is given, on how to work out some mole qns.
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sean Reply:
May 5th, 2010 at 11:28 pm
Thanks for the comments Juni.
We are working to make this chemistry blogsite a better experience for all Chemistry (Basic Level) students.
At the point of writing, we have make several improvements to support the students.
However, we believe this website should be a platform for students to exchange ideas and find their interest in Chemistry, rather than one that is one-way.
Participation is the key to Success.
For mole calculation questions, you can search by topic to find blogposts discussions that are related to Mole.
All the Best! Keep Learning.
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