What causes red smoke in an explosion?

What causes red smoke in an explosion?

The orange/red coloration is caused by the presence of NO2 which is a direct product of the detonation process, and is also produced in the after burning reactions and by the secondary oxidation of NO to NO2 as the cloud mixes with air.

Why does NI3 not exist?

Answer. – F has very high electronegativity as compared to Cl & I. – Electronegativity difference between N & Cl/I is comparatively less and thus N-Cl or N-I bond is relatively weaker. – Less stable NCl3 or NI3 thus is explosive in nature.

Why is nitrogen triiodide so unstable?

The reason nitrogen triiodide is so unstable is down to its molecular structure – one nitrogen atom and three iodine molecules all on one side due to how the nitrogen’s electrons are arranged. And all that repelling causes something called bond strain, which makes the entire molecule extremely unstable.

Is NBr3 stable?

a) NF3 is stable but NCl3,NI3,NBr3 are unstable in nitrogen halides. b)NH3 is soluble in water but other hydrides so not. (a) N is very small in size. Hence it is very difficult for N to accomodate ( form bonds with) larger halogen atoms like Cl, Br, I etc.

Why are Pentahalides more stable than Trihalides?

Due to the higher positive oxidation state of central atom in pentahalide state, these atoms will have larger polarizing power than the halogen atom attached to them. Hence due larger polarization of bond in pentahalide state as compared to trihalide state, the pentahalides are more covalent than trihalides.

Why is NF3 more stable?

NF3 is stable as the sizes of fluorine and nitrogen are comparable and the bonding interaction is good enough to give a stable compound. Also since chlorine atoms are larger than fluorine, the lone pair-lone pair and lone-pair bond-pair repulsion are also larger rendering nitrogen trichloride even more unstable.

Which of the following is most stable NI3?

NF3 is the only halide of nitrogen that is stable.

Which nitrogen Trihalides is least basic *?

Least basic is NF3 because of the highest electronegativity of fluorine.

Which is more basic NF3 or NI3?

NF3 is least basic because F is most electronegative and it will attarct the lone pair of N atom and thus the electrons will the less available form donation. As the size of hailde ion increases the electronegativity of halide ion decreases and the basic charater of NX3 increases.

Which is more basic NF3 or NH3?

NH3 is more basic than NF3. In NF3,N is less electronegative than F, hence bond pair shifts more towards F, thereby δ positive charge density on N increases, hence tendency to donate electron decreases.

Which is the strongest Lewis base?

Nitrogen, being smallest in size, can give up its lone pair of electrons most easily. Hence, the NH3​ is the strongest Lewis base.

Is NH3 a strong acid?

As it happens, ammonia (NH3) is not a strong acid; it is a weak base. The nitrogen of ammonia is surrounded by four pairs of electrons. Three of the pairs are occupied in binding to the three hydrogen atoms.

Is pcl5 a Lewis acid?

The phosphorus in PCl5 readily accepts electrons from other molecules. Therefore, it is considered as a Lewis acid.

Is PCl5 acid or base?

PCl5 has empty d orbital in valence shell so that it can accept a pair of electrons (from a Lewis base). So PCl5 can act as a Lewis acid.

Why Cu2+ is a Lewis acid?

Cu2+ (aq) reacts with ammonia to form the complex ion [Cu(NH)3)4]2+. Ammonia acts as the Lewis base in this reaction by donating its lone pair of electrons, whilst Cu2+ (which is an electron deficient, electrophile) accepts the lone pair of electrons from the ammonia, making it a Lewis acid.

Why is PCl3 a Lewis acid?

Phosphorous has empty d orbitals in its valence shell to accept electrons and hence acts as Lewis acid. IN PCL3 , PHOSPHORUS HAVE A FIVE VALENCE ELECTRONS IN WHICH THREE ELECTRONS ARE SHARED WITH THREE CHLORINE ATOMS DUE TO WHICH THREE COVALENT BONDS ARE FORMED.

Is oh a Lewis acid or base?

The hydroxide ion donates a pair of electrons for covalent bond formation, thus OH1- is a Lewis base in this reaction. The hydrogen ion accepts the pair of electrons so it is acting as a Lewis acid. Shown below is an example of a Lewis acid-base reaction that cannot be viewed as a Bronsted-Lowry acid-base reaction.

Which is more acidic PCl3 or PCl5?

Which is more reactive, PCL3 or PCL5? Thanks for the a2a. PCl5 will be more reactive than PCl3 because the oxidation state of phosphorus in PCl5 is +5 whreas in PCl3 is +3. Therefore the replulsive force between the bonds is greater in PCl5 than in PCl3 and hence is more reactive.

Is Ccl4 a Lewis acid or base?

Ccl4 does not act as lewis acid while sicl4 behave as a lewis acid.

Why is sicl4 not a Lewis acid?

CCl4 can not keep more than 8 electrons in its outermost orbit due to the absence of d-orbitals. So, it not act as lewis acid.

Is alcl3 a Lewis acid or base?

Aluminum chloride (AlCl3) is a Lewis acid because the aluminum atom has an open valence shell. When aluminum chloride is under discussion it is called a Lewis acid or an electrophile.

Is co2 an acid or base?

Carbon dioxide, which is mildly acidic, is a waste product of the processing (metabolism) of oxygen and nutrients (which all cells need) and, as such, is constantly produced by cells. It then passes from the cells into the blood. The blood carries carbon dioxide to the lungs, where it is exhaled.

Is water an acid or base?

Pure water is neither acidic or basic; it is neutral.

What is the pH of co2?

5.6

Does CO2 lower pH in blood?

As it combines with water, it forms carbonic acid, making the blood acidic. So CO2 in the bloodstream lowers the blood pH. When CO2 levels become excessive, a condition known as acidosis occurs.

How do I calculate pH?

To calculate the pH of an aqueous solution you need to know the concentration of the hydronium ion in moles per liter (molarity). The pH is then calculated using the expression: pH = – log [H3O+].