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Chromium trioxide (also known as chromium(VI) oxide or chromic anhydride) is an inorganic compound with the formula CrO3. It is the acidic anhydride of chromic acid, and is sometimes marketed under the same name.
Is CrO3 acidic basic or amphoteric?
The amphoteric character of chromium(III) is stated in its Wikipedia article: Chromium(III) oxide is amphoteric. Although insoluble in water, it dissolves in acid to produce hydrated chromium ions, [Cr(H2O)6]3+ which react with base to give salts of [Cr(OH)6]3−.
Is CrO3 amphoteric oxide?
Complete Answer: -So, from the above-given compounds, only vanadium pentoxide and chromium (III) oxide are the amphoteric oxides. -This is so because vanadium pentoxide can react with both acid and base.
What is the nature of CrO3?
It is marketed under the name of chromic acid because it is the acidic anhydride of chromic acid. This compound has two colors: when it is in the anhydrous form it is a dark-purple solid and in the wet form it is bright orange solid.
Why CrO is basic and CrO3 is acidic?
There is also a high effective nuclear charge. As a result, it can accept electrons and behave as an acid. Since in Cr2O3 chromium is in higher oxidation state than in CrO, therefore it is amphoteric while Cro is basic.
Is MnO2 basic or acidic?
Higher oxidation states are short of electrons, meaning they can accept lone pairs and function as Lewis acids. MnO has the lowest oxidation state, so it is the most basic and finally Mn2O7 (which is actually acidic). So, basically MnO2 is weakly acidic and mildly basic and can somewhat be classified as amphoteric.
Is BeO acidic or basic?
With the exception of beryllium oxide, BeO, which is amphoteric, all of the Group I and II metal oxides are strongly basic.
Which is the most basic oxide?
Na2O is that the most basic oxide. Al2O3 is amphoteric in nature . P2O5 is acidic oxide. SiO2 is weakly acidic oxide.
Is zno amphoteric?
Zinc oxide is amphoteric because it reacts with both acids and bases to form salts.
Is Mn2O7 acidic or basic?
The oxide in the lower oxidation state of a metal is basic and in the higher oxidation state of the metal it is acidic . For this reason Mn2O3 is basic and Mn2O7 is acidic.
Is CrO3 an oxidant?
Chromium trioxide is a strong oxidizing agent that is not soluble in most organic solvents and tends to explode in the presence of organic compounds and solvents. A solution of chromium trioxide in aqueous sulfuric acid can be safely mixed with acetone (Jones Reagent).
What is CrO3 formula?
CrO3.
What is CrO3 used for?
Chromium trioxide (CrO3): A molecule containing one Cr6+ atom having three double bonds to oxygen atoms. A strong oxidizing agent used to form certain other common oxidizing agents such as Jones reagent and PCC.
Is Fe2O3 acidic or basic?
Is ferric oxide acidic or basic? Ferric oxide, also known as iron(III) oxide, is an amphoteric oxide of iron with the chemical formula Fe2O3. It can be noted that oxides of iron, aluminium, and tin, are all amphoteric chemical species – they exhibit both acidic and basic qualities.
Is no an acidic oxide?
<br> Reason: Oxides of metals are generally basic and oxides of non-metals are generally acidic. Assertion: NO is a neutral oxide while CrO3 is an acidic oxide.
Is CuO basic or acidic?
Since copper (II) oxide is a metallic oxide so it is basic in nature. -When CuO is in aqueous solution, it does not dissociate completely in it which means that it is a weak base. Also when it is dissolved in water, it forms copper hydroxide (Cu(OH)2).
Is SeO2 acidic or basic?
O3 and SO2 are gases while SeO2 is solid. On moving down the group, acidic character decreases (in the same oxidation state). So, SO2 and SeO2 are acidic, whereas TeO2 and PoO2 are amphoteric.
Is N2O5 acidic or basic?
with water to form basic solutions and can react with acids directly to form salts. Likewise, SO3, CO2, and N2O5 form acidic aqueous solutions and can react directly with bases to give salts. Alkali metal and alkaline earth oxides are basic (dissolve in acid).
Is MGO basic?
Magnesium oxide is a simple basic oxide, because it contains oxide ions. It reacts with water to form magnesium hydroxide which is a base.
Is Al2O3 acidic or basic?
Aluminum Oxide Aluminium oxide is amphoteric. It has reactions as both a base and an acid.
Why is BeO acidic?
It reacts with a base to give salt and water. It reacts with an acid to give salt and water. Thus, ${\text{BeO}}$ reacts as an acid and as well as a base. Thus, ${\text{BeO}}$ is amphoteric.
Which oxide is most acidic?
Also, the oxides of non-metals are acidic in nature. Based on this property of acidic oxide SiO2 , Na2O and MgO are known to be basic oxides. Whereas we know that non-metallic oxides are acidic. So, Cl2O7 has the highest acidity because it is an oxide of non-metal.
Which oxide is basic in nature?
All oxides in Group 1 & 2 elements are basic (except BeO), they react with water to form a base: Lithium oxide reacts with water to produce Lithium hydroxide: Li2O(s) + H2O(l) → 2 Li+(aq) + 2 OH−(aq) Sodium oxide reacts with water to produce Sodium hydroxide: Na2O(s) + H2O(l) → 2 NaOH(aq).
Is Bi2O3 basic?
Bismuth(III) oxide (bi2o3) is a basic oxide.
Is Al2O3 amphoteric?
Aluminium oxide is an amphoteric oxide because it reacts with acids as well as bases and gives salts and water. Aluminium has electronegativity 1.5.
Why is ZnO called amphoteric oxide?
Reasons: Zinc oxide can react with both acid and bases, that’s why it is considered as amphoteric oxide. Only more reactive compound can displace less reactive compound. Since, non-metals are less reactive than hydrogen. So, they can’t displace hydrogen from diluted acids.
