Answer to Question #170420 in Inorganic Chemistry for Jurin junior

Question #170420

Answer the following stoichiometry questions by refering to the equation below:


2 KCIO3 ---> 2 KCI + 3 02


i. If 1.50 mol of KCIO3 decomposes, what is the mass of O2 that willbe produced?


ii. If 80.0 grams of O2 was produced, how many moles of KCIO3 are decomposed?


iii. Find the mass of KCIO3 needed if we need to produce 2.75 mol of KCI




1
Expert's answer
2021-03-10T06:54:37-0500

1. 2moles of KClO3 ---> 3moles of O2

1.50mol of KClO3 ---> 3/2 x 1.50= 2.25mol

1mol of O2 = 32g

2.25mol of O2= 32/1 x 2.25= 72.0g


II. moles of O2= 80.0/32.0 = 2.5moles of O2

3moles of O2 is produced from 2moles of KClO3

2.5moles of O2 will be produced from 2/3 x 2.5 = 1.67mol


3. 2mol of KCl ---> 2mol of KClO3

2.75mol of KCl----> 2.75mol of KClO3

Molar mass of KClO3= 122.5g

Mass= mole x molar mass = 2.75 x 122.5= 336.88g


Need a fast expert's response?

Submit order

and get a quick answer at the best price

for any assignment or question with DETAILED EXPLANATIONS!

Comments

No comments. Be the first!

Leave a comment

Ask Your question

LATEST TUTORIALS
New on Blog
APPROVED BY CLIENTS