a mass of 10g of sodium nitrate is dissolved in 10ml of water at 80 degrees celsius, at what temperature will it start to precipitate?
you have 100g/100g water.
see this chart: http://s3.amazonaws.com/answer-board-image/20094272405633763968056360000503.jpg
Looks to me about 35C it crosses 100g/100g
41-44
To determine the temperature at which sodium nitrate will start to precipitate, we need information about its solubility. Solubility refers to the amount of solute (in this case, sodium nitrate) that can be dissolved in a given amount of solvent (water) at a particular temperature.
The solubility of sodium nitrate in water varies with temperature. Typically, the solubility of most chemicals, including sodium nitrate, increases as the temperature of the solvent increases. This means that more sodium nitrate can be dissolved in water at higher temperatures.
To find the temperature at which sodium nitrate will start to precipitate, we need to compare the solubility of sodium nitrate at different temperatures.
Here are the steps to find the temperature at which sodium nitrate will start to precipitate:
1. Gather solubility data: Look for a solubility chart or table specific to sodium nitrate in water. This chart will provide information on the solubility of sodium nitrate at various temperatures. The solubility is usually expressed in grams of solute per 100 milliliters (g/100 ml) of water.
2. Analyze the solubility data: Examine the solubility values given in the chart or table. Look for the temperature at which the solubility of sodium nitrate starts to decrease. This decrease indicates that the solution is becoming saturated, and further cooling or a decrease in the amount of water present may cause precipitation.
3. Calculate the temperature: Once you have identified the temperature at which the solubility starts to decrease, this will be the temperature at which sodium nitrate will start to precipitate. Note this temperature as your answer.
Keep in mind that the specific solubility values and the temperature at which precipitation occurs may vary depending on the source of the data, impurities in the sodium nitrate, and other factors. Therefore, it's important to refer to a reliable source or consult an expert for the most accurate information.