All Questions
6
questions
0
votes
1
answer
207
views
Deposition of saturated solution and affect of evaporated water
20g of water is evaporated from 200g of saturated solution of KNO3(aq) at 60°C by heating and the solution was cooled to 20°C. How many grams of KNO3 were deposited? The solubility of KNO3 in 100g of ...
- 3
-1
votes
2
answers
520
views
Effect of water vaporation on saturated solution
At a high temperature, water is evaporated from the saturated solution by heating. What is the solution losing exactly by the fact that the water left the saturated solution? Does it affect its ...
- 3
0
votes
0
answers
50
views
Solubility Product, and it's relation to solubility
In order to remove temporary hardness of water, it is boiled.
On boiling, while Ca(HCO3)2 gives CaCo3(ppt.) , Mg(HCO3)2 gives Mg(OH)2(ppt.).
According to my book precipitation of Mg(OH)2 occurs due to ...
- 41
-1
votes
1
answer
108
views
What formula allows adjusting balance of (Ethyl Alcohol / Water / Caffeine powder) to know concentration for the Caffeine solution?
I am experimenting with different levels of concentrated caffeine solution. The solution has a small percentage of ethyl alcohol, in the $\ce{H2O}$.
Problems encountered too much ethyl alcohol ...
- 45
1
vote
0
answers
365
views
Mutual solubility of water and hexane [closed]
The question says that
the value of mutual solubility of water and hexane is small. Consult bibliography to find it out.
I can't find it and I'm also concerned as to why the question doesn't ...
- 477
7
votes
1
answer
2k
views
Why do some solid chemicals dissolve better in colder water?
I just discovered that some solid chemicals, such as $\ce{Na2SO4}$, dissolve better in cold water than hot water from here and would like to know if there is any particular reason as to why. Is it ...
- 173