What happens when an organic chemist makes a new molecule?
How do they know what the structure of the new molecule is?
They use lots of different techniques to determine the molecular mass and structure of the new molecule, one of which is mass spectroscopy.
Mass spectroscopy tells you the molecular mass of the molecule, and, it gives a good indication of how the atoms making up the molecule are put together. And it does this by breaking the molecule up!
Find out more about how mass spectroscopy can be used to determine the structure of organic molecules in our tutorial
AUS-e-TUTE Members can log-in to play the corresponding game, and to answer test and exam questions (which give you immediate feedback about your answer)
Friday, December 28, 2018
Sunday, December 16, 2018
pH of Weak Acid After Dilution
What happens to the pH of a solution of weak acid, such as acetic acid, if you dilute it by adding water to it?
How much water would you have to add to 100 mL of 0.20 mol L-1 acetic acid in order to make a solution with a pH of 3.0 ?
What is the pH of 1 × 10-11 mol L-1 acetic acid?
AUS-e-TUTE can help you answer these questions with our new resources.
AUS-TUTE Members should log-in to access the new "pH of Weak Acid After Dilution" tutorial, game and test (with worked solutions).
A "free-to-view" tutorial is currently available for non-members at:
https://www.ausetute.com.au/phdilwa.html
How much water would you have to add to 100 mL of 0.20 mol L-1 acetic acid in order to make a solution with a pH of 3.0 ?
What is the pH of 1 × 10-11 mol L-1 acetic acid?
AUS-e-TUTE can help you answer these questions with our new resources.
AUS-TUTE Members should log-in to access the new "pH of Weak Acid After Dilution" tutorial, game and test (with worked solutions).
A "free-to-view" tutorial is currently available for non-members at:
https://www.ausetute.com.au/phdilwa.html
Monday, December 10, 2018
pH after mixing acid and base
If you add enough strong base to a strong acid you can neutralise the solution and its pH will be 7.
But what if you don't add enough base to the acid.
Will the solution be neutral?
Will the pH of the solution be 7?
These are all very good questions which is why AUS-e-TUTE has just added a new tutorial, game, test and exam on this topic.
AUS-e-TUTE Members should log-in to use these resources.
If you are not an AUS-e-TUTE Member yet, you can view the tutorial for free at https://www.ausetute.com.au/phmixsab.html
But what if you don't add enough base to the acid.
Will the solution be neutral?
Will the pH of the solution be 7?
These are all very good questions which is why AUS-e-TUTE has just added a new tutorial, game, test and exam on this topic.
AUS-e-TUTE Members should log-in to use these resources.
If you are not an AUS-e-TUTE Member yet, you can view the tutorial for free at https://www.ausetute.com.au/phmixsab.html
Saturday, December 8, 2018
Effect of Dilution on pH of Strong Acid Solution
Need to know what the pH of your hydrochloric acid is after you dilute it?
Need to know how much water to add to your hydrochloric acid to make a solution with a particular pH?
AUS-e-TUTE has just added a new tutorial, game, test and exam to help you with this.
AUS-e-TUTE members should log-in to use the new resources.
If you're not an AUS-e-TUTE Member, there is a "free-to-view" tutorial currently available at https://www.ausetute.com.au/phdilsa.html
Need to know how much water to add to your hydrochloric acid to make a solution with a particular pH?
AUS-e-TUTE has just added a new tutorial, game, test and exam to help you with this.
AUS-e-TUTE members should log-in to use the new resources.
If you're not an AUS-e-TUTE Member, there is a "free-to-view" tutorial currently available at https://www.ausetute.com.au/phdilsa.html
Subscribe to:
Posts (Atom)
