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rom 702 3. BALANCE the following equation: KCIO3 -------> KCI + O, a) How many grams of KCl are produced from 250 grams mole of KCIO;? b) How many grams of KCIO; are needed to produce 15 grams mole of O,?

rom 702 3. BALANCE the following equation: KCIO3 -------> KCI + O, a) How many grams of KCl are produced from 250 grams mole of KCIO;? b) How many grams of KCIO; are needed to produce 15 grams mole of O,?

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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O Mass-Mass Stoich-$1 doc Sc urses/216161/files/236134137wrap31 Met-GUY, KLE L on > Files > Mass-Mass Stoich -s-1.doc -Mass Stoich -s-1.doc d Mass-Mass Stoich -s-1.doc (31 KB) 700M 3. BALANCE the following equation: KCIO3 -------> KCl + O, grams mole of KCIO,? a) How many grams of KCl are produced from 250 b) How many grams of KCIO, are needed to produce 15 grams mole of O;?
Transcribed Image Text:O Mass-Mass Stoich-$1 doc Sc urses/216161/files/236134137wrap31 Met-GUY, KLE L on > Files > Mass-Mass Stoich -s-1.doc -Mass Stoich -s-1.doc d Mass-Mass Stoich -s-1.doc (31 KB) 700M 3. BALANCE the following equation: KCIO3 -------> KCl + O, grams mole of KCIO,? a) How many grams of KCl are produced from 250 b) How many grams of KCIO, are needed to produce 15 grams mole of O;?
Expert Solution
Balancing the decomposition reaction of KClO3:

Potassium chlorate decomposes to give potassium chloride and oxygen gas:

2 KClO3 →2 KCl(s)  + 3O2(g)

Note: The unit gram mole means molar mass of molecule/atom/ions etc in grams.

1 gram mole = mass of one mole of molecule in grams.

Calculating the mole ratio of KClO3 and KCl

Since, 2 mol of KClO3 gives 2 mol of KCl,

hence, mole ratio of KClO3 : KCl = 2 : 1

Calculating the mole ratio of KClO3 to O2 gas:

Since, 2 mol of KClO3 gives 3 mol of O2 ,

hence, mole ratio of KClO3 : O2 = 2 : 3

 

 

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