What forms a precipitate with sulfuric acid?

Calcium, strontium and barium When exposed to sulfuric acid, a layer of insoluble sulfate is formed on each of these metals, slowing or stopping the reaction entirely. In the calcium case, some hydrogen is produced, along with a white precipitate of calcium sulfate.

What is sulfuric acid used for in medicine?

Sulfuric acid in the production of drugs: Sulfuric acid can damage the cancerous cell DNA, hence used to manufacture chemotherapy drugs. Sulfuric acid and skin: Sulfuric acid is used as an ingredient in skin ointments to treat skin infections, such as canker sores.

Is P nitroaniline an acid or a base?

Secondly, aniline and p-nitroaniline (first two green shaded structures) are weaker bases due to delocalization of the nitrogen non-bonding electron pair into the aromatic ring (and the nitro substituent).

What does sulfuric acid do in an experiment?

Reaction of sulfuric acid and H₂O When conducting chemical experiments, one must always add sulfuric acid to water, not the other way around. Sulfuric acid is a strong dehydrating substance, and concentrated sulfuric acid forces water out of various compounds. It is often used as a drying agent.

Is H2SO4 a precipitate?

A white precipitate means 3 is BaCl2. No reaction means 3 is H2SO4. Any unknown compound can be tested with all of the known reagents. This will identify it, but if there are many unknowns, using all the tests is very time-consuming.

What reacts to sulfuric acid?

Sulfuric acid is prepared industrially by the reaction of water with sulfur trioxide (see sulfur oxide), which in turn is made by chemical combination of sulfur dioxide and oxygen either by the contact process or the chamber process.

What are 3 types of acids?

Usually acids can be divided into three major types. First one is binary acid, second one is oxyacid, and the last one is carboxylic acid. Binary acids are all written in “H-A” form, which means hydrogen bond to a nonmetal atom.

What is the most common use of sulfuric acid?

fertilizer manufacture
Sulfuric acid is also a key substance in the chemical industry. It is most commonly used in fertilizer manufacture, but is also important in mineral processing, oil refining, wastewater processing, and chemical synthesis.

What is nitroaniline used for?

p-Nitroaniline is a bright yellow powder with a faint Ammonia-like odor. It is used as an intermediate in the manufacture of dyes, pharmaceuticals and pesticides.

What is nitroaniline soluble in?

4-Nitroaniline, p-nitroaniline or 1-amino-4-nitrobenzene is an organic compound with the formula C6H6N2O2. A yellow solid, it is one of three isomers of nitroaniline….4-Nitroaniline.

What happens when we add sulphuric acid to sugar?

It’s the dehydration of sugar (sucrose) with sulfuric acid. The sulfuric acid removes water from the sugar in a highly exothermic reaction, releasing heat, steam, and sulfur oxide fumes. Aside from the sulfurous odor, the reaction smells a lot like caramel.

How does H2SO4 react with sugar?

Concentrated sulfuric acid can perform a dehydration reaction with table sugar. After mixing, the color changes from white to brownish and eventually to black. As the acid dehydrates the sucrose, the water produced will dilute the sulfuric acid, giving out energy in the form of heat.