Oxygen Can Be Produced in the Laboratory by the Reaction $\rightarrow$

question 152

Multiple Choice

Oxygen can be produced in the laboratory by the reaction:
2KClO₃(s) $\rightarrow$ 2KCl(s) + 3O₂(g)
How many moles of potassium chlorate are needed to produce 257 mL of oxygen, Collected over water at 14 ^$\omicron$ C and 97.6 kPa? The vapor pressure of water at 14 ^$\omicron$ C is
1.60 kPa.

• A) 6.89 *10 - 3
• B) 7.00 *10 - 3
• C) 7.12 * 10 - 3
• D) 2.06 * 10 - 3
• E) 1.55 * 10 - 3

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