2. In the laboratory, O2(g) can be obtained from the following thermal decomposition reaction of potassium chlorate (KCIO3) with the aid of catalyst: A, MnO2 (catalyst) 2KCIO:(s) > 2KCI(s) + 302(g) To determine the composition of the mixture of KCIO3 and potassium chloride (KCI), 0.612 g KCIO3/KCl mixture is taken into a test tube and heated in the presence of sufficient catalyst, MnO2. The total mass of the test tube after heating decreased by 0.096 g. According to this result, what is the percentage of the KCIO3 in the mixture? (K: 39.0 g/mol, Cl: 35.5 g/mol, O: 16.0 g/mol)

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2. In the laboratory, O2(g) can be obtained from the following thermal decomposition reaction
of potassium chlorate (KCIO3) with the aid of catalyst:
A, MnO2 (catalyst)
2KC1O;(s)
> 2KCI(s) + 302(g)
To determine the composition of the mixture of KCIO3 and potassium chloride (KCI), 0.612
g KCIO3/KCl mixture is taken into a test tube and heated in the presence of sufficient
catalyst, MnO2. The total mass of the test tube after heating decreased by 0.096 g. According
to this result, what is the percentage of the KCIO3 in the mixture?
(K: 39.0 g/mol, Cl: 35.5 g/mol, O: 16.0 g/mol)
Transcribed Image Text:2. In the laboratory, O2(g) can be obtained from the following thermal decomposition reaction of potassium chlorate (KCIO3) with the aid of catalyst: A, MnO2 (catalyst) 2KC1O;(s) > 2KCI(s) + 302(g) To determine the composition of the mixture of KCIO3 and potassium chloride (KCI), 0.612 g KCIO3/KCl mixture is taken into a test tube and heated in the presence of sufficient catalyst, MnO2. The total mass of the test tube after heating decreased by 0.096 g. According to this result, what is the percentage of the KCIO3 in the mixture? (K: 39.0 g/mol, Cl: 35.5 g/mol, O: 16.0 g/mol)
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