Neco Model Questions Vol1 2020 Chemistry Question 16
Practice objective / multiple choice question 16 from the 2020 Neco Model Questions Vol1 Chemistry examination.
A 1.650 g sample of a phosphorus oxide containing only phosphorus and oxygen is placed in a 2.0 L sealed vessel at 298 K. The initial pressure in the vessel is 750 mmHg. After the sample is heated until it completely decomposes, the pressure rises to 1020 mmHg. The pressure increase is due solely to the evolution of O₂ gas according to the decomposition reaction \( \text{P}_x\text{O}_y \rightarrow x\text{P} + \frac{y}{2}\text{O}_2 \). Determine the empirical formula of the oxide.
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About This Question
This is Neco Model Questions Vol1 2020 Chemistry Question 16. It is one of the objective questions from the 2020 Neco Model Questions Vol1 Chemistry examination.
Difficulty level: Hard .
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