Asked by: Veruska Chaudhary
science chemistry

Is CrO amphoteric?

27
In CrO, the oxidation state of chromium is+2while in Cr2O3 the oxidation stateofchromium is +3. The oxides formed by elements in loweroxidationstate are basic while those in higher oxidation state areacidic oramphoteric. As a result, it can accept electronsand behaveas an acid.


Besides, is BeO amphoteric?

BeO dissolves in strongly acidic orbasicsolutions. Therefore, it is an amphoteric oxide. As weknow,according to diagonal relationship between aluminum andberyllium,both have similar properties. As oxide of aluminumisamphoteric in nature, similarly BeOisamphoteric.

Also Know, is Cr2O3 amphoteric oxide? As oxidation no. increases, charge increasesandthus oxides become acidic. Chromium(III) oxideisamphoteric. Although insoluble in water, it dissolvesinacid to produce hydrated chromium ions, [Cr(H2O)6]3+ whichreactwith base to give salts of [Cr(OH)6]3−.

In this way, is ZnO amphoteric?

ZnO reacts with hydrochloric acidformingzincchloride and water. With sodium hydroxide, it formssodiumzincate and water. Answer: amphoteric oxide are thosewhichcan rect with both acids and bases , zinc oxide reactswithboth of them therefore it's considered n amphotericacid.

Which is an amphoteric acid?

In chemistry, an amphoteric compound is amoleculeor ion that can react both as an acid and as abase. Manymetals (such as copper, zinc, tin, lead, aluminium, andberyllium)form amphoteric oxides or hydroxides. Amphoterismdepends onthe oxidation states of the oxide.

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Silicon is a metal , so, it cannot be either acidic,besic or amphoteric . if you are talking aboutthesilicon dioxide , which is the oxide form of siliconthenhere are the answer . All of these oxides are amphoteric-they show both basic and acidic properties. These oxides allreactwith acids to form salts.

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Is PbO amphoteric?

PbO is strongly amphoteric, whichmeansthat it reacts with both acids and with bases.

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Why is BeO insoluble in water?

When BeO is dissolved in water,thehydration energy of its ions is not sufficient to overcome thehighlattice energy. Therefore, BeO is insoluble in water.Thus,the lattice energy of BeSO4 is not very high and soitis soluble in water.

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Why BeO is amphoteric in nature?

BeO dissolves in strongly acidic orbasicsolutions. Therefore, it is an amphoteric oxide. As weknow,according to diagonal relationship between aluminum andberyllium,both have similar properties. As oxide of aluminum isamphotericin nature, similarly BeO isamphoteric.

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Why is Al2O3 amphoteric?

Aluminium oxide is amphoteric. It has reactionsasboth a base and an acid. The oxide ions are held too strongly inthesolid lattice to react with the water. Reaction with acids:Aluminumoxide contains oxide ions, and thus reacts with acids inthe sameway sodium or magnesium oxides do.

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Is b2o3 amphoteric?

No, boron is a nonmetal and itssimplestoxide,B2O3, is exclusively an acidic oxide. BCl3 isreadilyand completely hydrolysed by water to boric acid and HCl,and thereis no possibility of any reaction between B2O3 andHCl innormal circumstances.

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Is h2so4 amphoteric?

Sulfuric acid (H2SO4) isanacid in water but is amphoteric in superacids.Amphiproticmolecules, such as amino acids and proteins,areamphoteric.

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What makes something amphoteric?

Amphoteric substances are substances thatdisplayboth acidic and basic properties, so they can act as eitheracidsor bases. If an amphoteric substance reacts with abase,then it will take on the role of an acid by being anelectronacceptor or proton donor.

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Why is water Amphiprotic?

Molecules or ions which can either donate or acceptaproton, depending on their circumstances, arecalledamphiprotic species. The most importantamphiproticspecies is water itself. Conversely, whena base reacts withwater, a water molecule donates aproton, and henceacts as an acid.

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Is NaOH amphoteric?

Is NaOH amphoteric? No. Alkali metals'hydroxides,oxides do not show amphoteric properties.ThereforeNaOH is not an amphotericcompound.

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Is chromium green oxide toxic?

Toxicity. Though chromium oxide greenisnot a serious health hazard, it can cause irritation of theskinand eyes and can cause nausea and other problems if ingested.Italso can cause respiratory problems when dustisinhaled.

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Is PbO2 amphoteric?

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Why CrO is basic but Cr2O3 is amphoteric?

The oxides formed by elements in lower oxidationstateare basic while those in higher oxidation state areacidicor amphoteric. As a result, it can accept electronsandbehave as an acid. Since in Cr2O3 chromiumisin higher oxidation state than in CrO, therefore itisamphoteric while Cro is basic.

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Is chrome oxide the same as chromium oxide?

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Is chromium oxide soluble in water?

Elementary chromium does not reactwithwater at room temperature. Many chromiumcompoundsare relatively water insoluble. Chromium(III)compounds are water insoluble because these arelargelybound to floating particles in water. Chromium(III)oxide and chromium (III) hydroxide are theonlywater soluble compounds.

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Is Mn2O3 amphoteric?

Both manganous and manganic ions form acidicsolutions.Manganese is found in the +4 state largely in manganesedioxide,MnO 2 the +4 oxidation state isamphoteric, i.e.,in the +4 state manganese can either donateor accept electrons inchemical reactions. Pyrolusite (MnO2) is the majorore.

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31st May, 2021

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