Welcome Parents

Please take a seat and make yourself comfortable

Molecule CH4 BCl3

Name ammonia Boron trichloride

Bonding Picture

Structural Formulae

Shape linear

How big is a balloon?

What is another name for ethanoic acid?

What is the test for carbon dioxide?

How can we tell if a gas is produced?

Acetic acid

It turns lime water cloudy

See bublesHear fizzingStrange smell

•Wearing goggles place one level teaspoon of baking soda in each balloon. You may want to use a funnel to help you.

•Rinse and dry the teaspoon

•Label the flasks 1,4,7,10

•Place 1 teaspoon of vinegar in flask 1, 4 in flask 4 and so on

•Place a balloon over the top of container 1. Turn the balloon over so that all the baking soda drops into the flask. Swirl the container. What happens to the balloon

•Repeat step 5 with each of the flasks.

Remember to make a note of anything you see, hear, smell, feel etc

Questions

Did any of the balloons inflate?

Did they all inflate the same amount?

Is there a relationship between the volume of gas produced and the volume of ethanoic acid used?

What volume of vinegar will no longer inflate the balloon?

Is there a limit to the volume of gas that can be produced from one teaspoon of baking soda?

Why does adding more of one reactant not increase the quantity of products produced?

Which of the two reactants is left in ;

Flask 1

Flask 2

Flask 3

Flask 4

So which reactant in each flask was the limiting reactant?

Your Lab report could include;

•Information on acid/ base reactions•Information on limiting reactants•Information on vinegar and baking soda•A graph•A diagram

Remember to use your rubric to help you

Lab Reports Due Friday