How to make hydrochloric acid? How to prepare 0.5 m HCl. Describe how to prepare 1.00 L of a 0.646 M HCl solution, starting with a 2.00 M HCl solution. Explain how to get 1% HCl from a 37% concentrated HCl. How to prepare hydrogen gas How to prepare a dilute HCl solution? How to...
B A All the dilute hydrochloric acid has been reacted. B All the zinc has reacted. C Hydrogen is produced at a constant rate. D The reaction has started to slow down. 相关知识点: 试题来源: 解析 B 反馈 收藏
The real issue is with sulfuric acid, not that I would dilute conc. nitric nor conc. hydrochloric acids. Its just that sulfuric acid generates much more heat, and so much dense than water, a few drops of water would skitter about on the sulfuric acid surface, and sulfuric acid's viscosit...
Salt activates enzymes needed for proper digestive processes and is required by the parietal cells of the stomach wall to make hydrochloric acid. Salt also helps balance hormones, facilitates with metabolic processes and establishes an optimal pH level in the body. That’s because your stomach acid...
How many mL of 50% of acid solution should be added to pure acid to make 40 mL of 75% acid?Concentrating Solution:It is much simpler to dilute a stock solution to a less dilute solution, which is given by the equation CsVs=CdVd ...
battery acid and lemon juice. Diluting an acid decreases the concentration of H+(aq) ions, which increases the pH level of the solution towards 7, making it less acidic. However, the pH level of an acidic solution cannot become greater than 7, because the water you add to dilute it is...
Unrelenting indigestion may be caused by a lack of hydrochloric acid or not enough digestive enzymes when eating liquid with foods which dilutes the juices in our stomach. What the first thing a waitress or waiter asks you when you sit down in a restaurant? “What can I bring you to drin...
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Add reagent to change pH to the desired value. The reagent used to change pH should be fairly dilute and not alter chemical composition of the solution. Hydrochloric acid, 0.1M HCl, would be used to lower pH and sodium hydroxide, 0.1M NaOH, would be used to raise pH. Combining HCl and...
The ice does two things. It dilutes the aqua regia as it melts and takes up the heat of dilution that is generated when aqua regia is diluted. Leaving it overnight and allowing the nitrosyl chloride to break down is tantamount to converting it into HCl. You’ll notice it will have los...