About how much potassium nitrate is needed to make a saturated solution in 100 g of water at 80°C?
To determine the amount of potassium nitrate needed to make a saturated solution in 100 g of water at 80°C, we can use the solubility data for potassium nitrate.
The solubility of potassium nitrate in water increases with temperature. At 80°C, the solubility of potassium nitrate is approximately 246 g per 100 g of water.
To calculate the amount of potassium nitrate needed, you can use the following formula:
Mass of potassium nitrate = (solubility of potassium nitrate / 100) * mass of water
Substituting the values:
Mass of potassium nitrate = (246 / 100) * 100
Mass of potassium nitrate = 246 g
Therefore, approximately 246 grams of potassium nitrate is needed to make a saturated solution in 100 g of water at 80°C.
To determine the amount of potassium nitrate needed to make a saturated solution in 100 g of water at 80°C, we need to know the solubility data for potassium nitrate at that temperature.
Here's how you can find that information:
1. Start by searching for the solubility of potassium nitrate in water at different temperatures. A reliable source for this information is a solubility table or handbook that provides data for various substances.
2. Look for the solubility data specifically at 80°C. The solubility is usually given in grams of solute per 100 grams of solvent (in this case, grams of potassium nitrate per 100 grams of water).
3. Once you find the solubility value, you can calculate the amount needed for a saturated solution in 100 g of water. Since the solubility is given per 100 grams of water, you'll need to convert the solubility value to match the amount of water you have.
For example, if the solubility of potassium nitrate at 80°C is 100 g/100 g of water, it means that 100 g of water can dissolve 100 g of potassium nitrate. So, if you have 100 g of water, you would need 100 g of potassium nitrate to create a saturated solution at 80°C.
Remember to adjust the calculations based on the actual solubility data you find.