The vapor pressure of water at 21 degree C Is 19 mm Hg. If 100 ml of oxygen is c
ID: 1057669 • Letter: T
Question
The vapor pressure of water at 21 degree C Is 19 mm Hg. If 100 ml of oxygen is collected over water at 21 degree C and 730 mm Hg total pressure, how much pressure Is due to water vapor and how much to the pressure of oxygen? Write n chemical equation for the decomposition by heat of potassium chlorate to form oxygen and potassium chloride. Will the addition of a small amount of manganese dioxide to the potassium chlorate charge the above chemical reaction? Explain. A 2.05 g mixture of potassium chlorate and potassium chloride, upon heating, liberated 425 ml of oxygen. This was collected over water at 21 degree C and 745 mm Hg total pressure. What percentage of pure potassium chlorate was contained in the 2.05 g of mixture? Base your calculations on mole relationships.Explanation / Answer
The vapor pressure of water at 21 C is 19 mmHg. If 100 ml of oxygen is collected over water at 21C and 730 mmHg total pressure, how much pressure is due to water vapor and how much to the pressure of oxygen
Given that,
The vapor pressure of water at 21 C = 19 mmHg
The total pressure at 21 C = 730 mmHg
Total pressure = pressure of water + pressure of oxygen
730 mmHg = 19 mmHg + pressure of oxygen
pressure of oxygen = 730 mmHg - 19 mmHg
= 711 mmHg
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