How many liters of water must be added to 50 liters of a 30% acid solution to produce a 20% acid solution? Pure acid is to be added to a 5% acid solution to obtain 95 litres of 58 % solution. What amounts of each should be used? How many ...
By solving the mixture problems with the help of a system of equation and some given concentration, we can calculate the amount of acid that is present in the solution. Also, in such problems, we can calculate the amount of some solvent to be added in order ...
Answer to: When diluting an acid, always pour: 1. the water into the acid. 2. the base into the water. 3. the acid into the water. 4. the water...
aadded during 20 minutes to concentrated hydrochloric acid (80 ml.) and water (20 ml.) containingamalgamated zinc (80 g.), and the reaction completed by heating the mixture under reflux for 10 minutes.The hot liquid was then decanted, the residual amalgam was washed with hot methanol (100...
Animals also show signs of moderate to high toxicity from acute oral ingestion. Aquatic animals are affected heavily by HCl due to the pH shift that occurs when HCl is added to the water. Chronic exposure to hydrochloric acid is also dangerous for humans and animals. In humans, long-term ...
asifflng around too long.[translate] ahydrochloric acid, mixed with 10 ml of water, is added to the sep funnel[translate] aacid-water mix is added and shaken. The odor should now be gone, but if it[translate]
Purification Methods Aqueous methacrylic acid (90%) is saturated with NaCl (to remove the bulk of the water), then the organic phase is dried with CaCl2 and distilled under vacuum. Polymerisation inhibitors should be added to the distillate and include 0.25% p-methoxyphenol, 0.1% hydroquinone, ...
common preservative in dairy products, but not allowed to be added. In general, benzoic acid is considered to be safe. But for some special populations, including infants, long-term intake of benzoic acid may lead to asthma, urticaria, metabolic acidosis and other adverse reactions. Paul ...
The type of water is also crucial when considering the fate of PAEs as biodilution or bioaccumulation may be observed (Gobbato et al., 2024). It was noted that total concentrations of 6 PAEs in algae and fish collected from a freshwater environment (Songhua River, China) were higher than ...
3. the acid into the water. 4. the water into the base. Why does the pH of the HCl solution initially increase very slowly when an unknown metal is first added to the acid solution, but gradually increase at a faster rate as the reaction proceeds to compl...