what is the maximum mass of potassium chloride (KCl) that will dissolve in 100.0g water at 70C
To determine the maximum mass of potassium chloride (KCl) that will dissolve in 100.0g water at 70°C, we need to refer to the solubility table.
According to the solubility table, the solubility of KCl in water at 70°C is approximately 34.2g/100g water.
This means that for every 100g of water at 70°C, 34.2g of KCl can dissolve.
So, to calculate the maximum mass of KCl that can dissolve in 100.0g water at 70°C,
Maximum mass of KCl = (34.2 g KCl / 100g water) * 100.0g water
= 34.2g
Therefore, the maximum mass of potassium chloride (KCl) that will dissolve in 100.0g water at 70°C is 34.2g.
To find the maximum mass of potassium chloride that will dissolve in 100.0g of water at 70°C, we need to refer to the solubility chart or solubility data for potassium chloride at this temperature.
The solubility of a substance refers to the maximum amount of solute that can dissolve in a given amount of solvent at a particular temperature. It is usually expressed in grams of solute per 100 grams of solvent.
Here's how you can find the information you need:
Step 1: Look up the solubility of potassium chloride at 70°C.
- Access a reliable solubility chart or search for solubility data for potassium chloride at 70°C. Some common sources include textbooks, scientific databases, or reputable online resources.
Step 2: Determine the solubility in grams of potassium chloride per 100 grams of water.
- Once you find the solubility value, note the units in which it is given. It is often expressed in grams/100g or grams per 100 grams.
- For example, let's say you find that the solubility of potassium chloride at 70°C is 35g/100g.
Step 3: Calculate the maximum mass of potassium chloride.
- To find the maximum mass of potassium chloride, you can set up a simple proportion using the given solubility and the mass of water.
- The proportion would look like this: (solubility in grams of KCl / 100g water) = (maximum mass of KCl / 100.0g water)
- In our example, the proportion would be: (35g/100g) = (maximum mass/100.0g)
- Rearranging the proportion to solve for the maximum mass, we have:
maximum mass = (35g/100g) * 100.0g
maximum mass = 35g
Therefore, the maximum mass of potassium chloride that will dissolve in 100.0g of water at 70°C is 35 grams.