Difference between quick lime, slaked lime, lime water and soda lime
2017年1月21日 · To get slaked lime = hydrated lime ($\ce{Ca(OH)2}$ - Calcium hydroxide) you mix Lime with water, resulting in a white powdery substance. In another process, you can make lime water - where you add lime into a greater amount of water resulting in water solution/suspension of hydrated lime $\ce{Ca(OH)2}$ in water - this is also called milk of lime.
Why does slaked lime water lose alkalinity over time?
2017年3月18日 · If you dissolve slaked lime in water it will absorb carbon dioxide from the atmosphere over time. Carbon dioxide will react with hydroxide ions from the slaked lime forming mainly hydrocarbonate ions. Hydrocarbonate ions will equilibrate with water and at about pH < 8 carbon dioxide will slowly be liberated from the solution.
Bad slaked lime? - Chemistry Stack Exchange
2016年9月10日 · You misunderstand what slaked lime is. Slaked lime is the common name for calcium hydroxide and the reaction to dissolve calcium hydroxide is very exothermic as you have noticed. You also misunderstand about quicklime. Quicklime is Calcium oxide, $\ce{CaO}$. It is formed by heating calcium carbonate and driving off carbon dioxide.
inorganic chemistry - Slaked lime: Why does calcium hydroxide …
2018年6月3日 · The overall reaction for a solid soda lime scrubber according to the Wikipedia page here 1 is: $$\ce{CO2 + Ca(OH)2 -> CaCO3 + H2O + {heat (in the presence of water)}}$$ Each mole of $\ce{CO2}$ (44 g) reacting with calcium hydroxide produces one mole of water (18 g). The reaction can be considered as a strong-base-catalysed, water-facilitated ...
Why was lime used by the Nazi's? - Chemistry Stack Exchange
I am reading a book (Into That Darkness) about the Nazis, where there is the following passage:causing unimaginable suffering to the deportees who were either left waiting, naked and without food or water, in the open, sometimes for days, or else were crammed into railway cars the floors of which had been covered with lime and were left to suffocate on sidings
inorganic chemistry - Why is the formation of slacked lime …
2016年10月1日 · My teacher made me write that that the formation of calcium hydroxide (slacked lime) from calcium oxide (qucklime) is described as $\ce{CaO + H2O -> Ca(OH)2}$ and that the process. forms bubbles ; is an exothermic reactions ; makes a hissing sound ; Why does it make a hissing sound and form bubbles?
What's the maximum temperature of quicklime slaking?
2022年10月3日 · Normally the maximum temperature of lime slaking is listed at about 100 C. I've read that using water with high salt concentrations will catalyze the slaking reaction and increase the boiling point thereby leading to higher slaking temperatures. If you performed the slaking operation in a pressurized chamber this should increase the boiling point.
Theoretical temperature change in lime hydration
2016年3月11日 · Assume that I have 1 kg of lime which means that I would theoretically need 322 grams of water for complete hydration. However, I want to use different amounts of excess water and calculate the final temperature of the whole system after the reaction has finished. The heats of formation are given at the standard temperature in the tables.
DIY chemistry - Calcium from bone - Chemistry Stack Exchange
2020年2月3日 · I am interested in making slaked lime. I've been putting wood ashes in my garden bed lately and it's been doing wonders but if I had a steady supply of home made lime that would do wonders. I cook a lot on the weekends and I usually have a lot of bones left over. Some are cooked and some are uncooked. Could I use any to make quicklime with?
acid base - Aqueous vs. Solid - Chemistry Stack Exchange
As you say, depending on concentration, the answer can go either way. If you are reacting it further (lime water as a $\ce{CO2}$ detector), precipitation of much less soluble $\ce{CaCO3}$ makes the intermediate step unimportant (perhaps aside from kinetics). Add more $\ce{CO2}$ to obtain soluble $\ce{Ca(HCO3)2}$.