Fe + 2HCl --> FeCl2 + H2
You will get a salt, iron II chloride ( ferrous chloride ) and hydrogen gas you may see bubbling out of any solution your reactants are in.
Not much.
Phenolphtalein is colorless in an acidic medium.
Adding sulfuric acid to water is the recommended way of working to avoid accidents.
The acid in the battery will become diluted - reducing the efficiency.
Phenolphthalein is colorless in acidic solutions and will remain colorless when added to an acid. This is because phenolphthalein changes color at a pH of around 8.2 to 10, indicating alkalinity.
When sodium chloride is added to a solution of a weak acid, the chloride ions from the salt will not react with the weak acid. However, the sodium ions can react with the weak acid to form a salt of the weak acid and a strong acid. This reaction can change the pH of the solution, depending on the relative strengths of the weak acid and the strong acid formed.
If dilute hydrochloric acid is added to sandstone, the acid may react with any calcite present in the sandstone, causing it to fizz and release carbon dioxide gas. However, the effect would be limited as sandstone is mainly composed of silica, which is not reactive to hydrochloric acid. Thus, the overall impact on the sandstone would be minimal.
Technically it would affect everyone's health who would drink the tap water with acid. They might die if they don't get treated fast enough
When dilute sulfuric acid is added to red-hot iron filings and then cooled, a chemical reaction occurs where the iron reacts with the acid to form iron(II) sulfate and hydrogen gas. The iron filings dissolve in the acid, producing a greenish solution, while hydrogen gas evolves as bubbles. Upon cooling, the iron(II) sulfate may crystallize out of the solution depending on its concentration.
Adding more acid to a buffer solution will initially cause a slight decrease in pH as the buffer system neutralizes the added acid. However, as the acid is continually added, the buffer system may become overwhelmed, leading to a significant decrease in pH over time.
Sulfuric acid is added to sugar to make carbon
The addition of hydrochloric acid to water will increase the hydrogen ion concentration and decrease the pH of the water. Hydrochloric acid is a strong acid that dissociates completely in water to form hydrogen ions. This increase in hydrogen ions will lower the pH of the water.