To analyze the properties described, we can compare potassium bromide (KBr) and potassium nitrate (KNO3) in terms of their solubility in water at different temperatures, as well as the effects of temperature on their solubility.
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Y-Intercept of 12 g/100g of water:
- This likely corresponds to potassium bromide (KBr). KBr has a relatively lower solubility in water compared to KNO3 at room temperature.
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Lower slope and less affected by heat:
- This also suggests potassium bromide (KBr). KBr's solubility increases less dramatically with temperature compared to KNO3, indicating it has a lower slope in the context of a solubility-temperature graph.
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Solubility of approximately 60 g per 100 grams of water at 20°C:
- This solubility aligns more closely with potassium nitrate (KNO3). At 20°C, KNO3 indeed has a higher solubility compared to KBr.
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Solubility of approximately 100 grams per 100 grams of water at 60°C:
- This higher solubility at 60°C strongly corresponds with potassium nitrate (KNO3) which shows significant solubility increases at elevated temperatures.
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More positive slope and is more affected by heat in terms of solubility:
- This description indicates potassium nitrate (KNO3). KNO3's solubility significantly increases with temperature, demonstrating a steep slope when plotted on a solubility vs. temperature graph.
Summary:
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Potassium Bromide (KBr):
- Y-intercept: 12 g/100g of water (lower solubility)
- Lower slope; less affected by heat.
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Potassium Nitrate (KNO3):
- Solubility: 60 g/100g water at 20°C.
- Solubility: 100 g/100g water at 60°C.
- More positive slope; more affected by heat.
In summary:
- KBr: Y-intercept at 12 g/100g, lower slope, less affected by heat.
- KNO3: 60 g/100g at 20°C, 100 g/100g at 60°C, higher slope, more affected by heat.