Consider the reaction 2 KClO 3 ( s ) ? 2 KCl( s ) + 3 O 2 ( g ) How many grams o

Question

Consider the reaction

2 KClO3(s) ? 2 KCl(s) + 3 O2(g)

How many grams of oxygen are produced from the complete reaction of 31.1 g of KClO3?


Select a response:


15.3 g
13.3 g
12.2 g
14.1 g
10.8 g Consider the reaction

2 KClO3(s) ? 2 KCl(s) + 3 O2(g)

How many grams of oxygen are produced from the complete reaction of 31.1 g of KClO3?


Select a response:

Consider the reaction

2 KClO3(s) ? 2 KCl(s) + 3 O2(g)

How many grams of oxygen are produced from the complete reaction of 31.1 g of KClO3?


Select a response:

15.3 g 13.3 g 12.2 g 14.1 g 10.8 g
15.3 g
13.3 g
12.2 g
14.1 g
10.8 g

Explanation / Answer

Number of moles of KClO3 -> 31.1/122.6 = 0.25 moles

Hence 2 moles of KClO3 produce 3 moles of O2.

O2 moles produced = 3/2*0.25 = 0.375 moles

Weight of O2 in gms = 0.375*32 = 12

Hence the ans will be (c) i.e .12.2 gms

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