potassium chlorate,… - QuestionCove
OpenStudy (anonymous):

potassium chlorate, KClO3, decomposes when heated to produce potassium chloride and oxygen gas. If 2.50 grams of KCLO3 were heated in a test tube, how many grams of oxygen gas should be given off?

4 years ago
OpenStudy (anonymous):

pleassseee help...

4 years ago
OpenStudy (anonymous):

First I think you need to write a balanced equation for this reaction. __KClO3 --> __KCl + __O2

4 years ago
OpenStudy (anonymous):

yea the balanced equation woud be 2KClO3= 2KCl+3O2

4 years ago
OpenStudy (anonymous):

but im stuck on what to do next

4 years ago
OpenStudy (anonymous):

This is a bond enthalpy problem right? ... so I think you should write it out like where you can see the bonds ... then use bonds broken and bonds formed?

4 years ago
OpenStudy (anonymous):

um all I know is it has to do with stoichiometry

4 years ago
OpenStudy (anonymous):

try this ... You're breaking 6 cl o bonds and your forming 3 o2 bonds right? So try using bond enthalpy for those and do summation of bonds broken - bonds formed.

4 years ago
OpenStudy (anonymous):

uhhhhh i have no idea what bond enthalpy iss

4 years ago
OpenStudy (anonymous):

You should have learned it for this problem. What level chemistry are you in?

4 years ago
OpenStudy (anonymous):

4 years ago
OpenStudy (anonymous):

Oh. Well I may be making it harder than it is for you. I'm in college level. :(

4 years ago
OpenStudy (anonymous):

oooh i see...well thanks for trying :)

4 years ago
OpenStudy (anonymous):

try to look it up in your book maybe?

4 years ago