Sulphuric acid is added to prevent hydrolysis and to provide surplus H+ ions in the solution to keep reaction proceeding and also sulphuric acid is stable towards oxidation. …

A potassium dichromate solution in sulfuric acid can be used to produce a reversal negative (that is, a positive transparency from a negative film). This is effected by developing a black and white film but allowing the development to proceed more or less to the end point.

After all the Fe2+ ion has been oxidized, the endpoint of the titration can be recognized by the colour change (from green to yellow) when excess dichromate ion now oxidizes. A standard solution of known concentration is accurately prepared using solid K2Cr2O7.

In the redox titration of iron(III) with permanganate or dichromate, we use phosphoric(V) acid to “mask” the color of iron(III) because it interferes with the end point color change.

Usually H2SO4 and H3PO4 are added the sulfuric is the main source of H3O+ the phosphoric acid is added to complex Fe+3. By lowering the concentration of ferric ion the change in redox potential is increased making the endpoint easier to see or measure electronically.

Sulfuric Acid (H2SO4) is a strong mineral acid that has is colorless when pure. This chemical is used as a chemical intermediate to manufacture other chemicals and cleaning metal surfaces. The formula for sulfuric acid is H2SO4. The molar mass of sulfuric acid is 98.07848 g mol.

Sulphuric acid (H2SO4) is called the “King of Chemicals” because it is used in the preparation of a very large number of other useful chemicals such as hydrochloric acid, nitric acid, dyes, drugs etc. Sulfuric acid has the properties of strong acidic nature and is corrosive.

After you have worn all the protective gear, neutralize the acid using one of these three options: Sodium Carbonate, Sodium Bicarbonate or Sodium Hydroxide. Pour the bases on the areas having the spilled sulphuric acid. You will observe some bubbling or fizzing, which means that base is neutralizing the acid.

This reaction happens spontaneously and without warning. Mixing these two will form a corrosive, toxic chemical known as peracetic acid. This chemical could irritate your eyes and nose, but in extreme cases could cause serve chemical burns to your skin and mucous membranes.

Baking soda is sodium bicarbonate (NaHCO3), and sulfuric acid is H2SO4. So this means 2 moles of sodium bicarbonate is needed to neutralise 1 mole of sulfuric acid.

Storage Challenges. Sulfuric acid presents a serious storage challenge because it’s a very heavy chemical, especially at high concentrations. At 93-98% concentration it is nearly twice the weight of water. It’s also an aggressive chemical that oxidizes plastic and corrodes metals.

1. PTFE (or Teflon™) – PTFE, also commonly known as Teflon™, is one of the most acid resistant materials available and is commonly used in chemical and pharmaceutical lab applications.

Some common plastics that are resistant to strong sulphuric (>98%) acid are things like teflon, viton and HDPE. Some that aren’t resistant are things like nylon, nitrile, epoxy and polyesters.

This is why it is able to resist corrosion from many chemicals, such as sulphuric acid and nitric acid. For these reasons, Teflon-coated plastic containers are ideal for storing a wide variety of acids and bases.

Because Plastic contains the sum content like Fluorocarbon, chloro-sulfonated polyethylenene, natural rubber which are considered as a resistant for the Hydrofluoric acid. That’s the main reason because of which it doesn’t dissolved the plastic.

Hydrofluoric acid

I am unsure how to approach this question, because, in general, “plastics”, do not react with conc. acid. Hydrochloric, nitric, and sulfuric acids are now routinely supplied in plastic rather than glass bottles. Hydrofluoric acid, which would etch glass, has always been supplied in plastic containers.