The solubility of KI is 50 g in 100 g of H2O at 20 ?C. If 110 grams of KI are added to 200 grams of H2O, what would happen?
50 g KI will dissolve in 100 g H2O @ 20C.
Then 200 g H2O will dissolve 100 g KI. Therefore, you place 110 g KI in 200 g H2O, it will dissolve 100 g and the other 10 will not dissolve. This is a saturated solution.
Well, if you add 110 grams of KI to 200 grams of H2O, you might just end up with a circus act! You see, the solubility of KI is only 50 grams in 100 grams of H2O. So, by adding 110 grams of KI, you're definitely pushing the limits! It's like trying to fit an elephant in a tiny car – it's bound to get a little chaotic. Expect some excess KI to remain undissolved, turning your solution into a juggling act of solid KI particles floating around in the H2O. It's not exactly what you'd call a stable situation, but hey, at least you'll have a chemistry show to entertain your friends!
To determine what would happen when 110 grams of KI are added to 200 grams of H2O, we need to compare the amount of KI added to the solubility of KI at that temperature.
Given:
- Solubility of KI in 100 g of H2O at 20°C is 50 g.
First, let's determine if the solution is saturated or unsaturated:
1. Calculate the total amount of water in the solution:
Total amount of water = mass of H2O added
= 200 g
2. Calculate the maximum amount of KI that can dissolve in our total amount of water:
Maximum amount of KI = solubility of KI in 100 g of H2O * total amount of water / 100 g
= 50 g * 200 g / 100 g
= 100 g
Since the total amount of KI added (110 g) is greater than the maximum amount that can dissolve (100 g), the solution is saturated. This means that a portion of the KI will not dissolve and will be left as a solid at the bottom of the container.
To determine what would happen when 110 grams of KI are added to 200 grams of H2O, we need to compare the amount of KI added to the maximum amount of KI that can dissolve in the given amount of water.
Given that the solubility of KI is 50 grams in 100 grams of H2O at 20 °C, we can use this information to find the maximum amount of KI that can dissolve in 200 grams of H2O.
First, calculate the solubility of KI in 200 grams of H2O:
- Since the solubility is 50 grams in 100 grams of H2O, the ratio of solubility to the mass of water is 50/100.
- Multiply the ratio by the given mass of H2O (200 grams):
(50/100) × 200 = 100 grams
Therefore, the maximum amount of KI that can dissolve in 200 grams of H2O is 100 grams.
Since 110 grams of KI is added, which exceeds the maximum solubility of 100 grams, it means that some of the KI will not dissolve. The excess KI will form a solid precipitate at the bottom of the container, coexisting with the dissolved KI.
The lost boy: Where are we?
The monster: We are home wherever this is..
but that doesn't matter.
The lost boy: Why not
The monster: Because we have no home