Asked by: Damari Arnd
science chemistry

What is Cr2O4?

34
Synonyms: Chromiumchromate(H2CrO4)412


Furthermore, what is CrO4?

Description: Chromate(2-) is a chromiumoxoanionresulting from the removal of two protons from chromicacid. It isa divalent inorganic anion and a chromiumoxoanion.

what is Cr2O7? Description: Dichromate(2-) is a divalent inorganicanionobtained by removal of both protons from dichromic acid. Itis achromium oxoanion and a divalent inorganic anion. It is aconjugatebase of a hydrogen dichromate.

Furthermore, what is the name of Cr2O3?

Chromium(III) oxide is the inorganic compound oftheformula Cr2O3. It is one of principal oxides of chromiumandis used as a pigment. In nature, it occurs as the raremineraleskolaite.

Is chromium a metal?

Chromium is a lustrous, brittle,hardmetal. Its colour is silver-gray and it can behighlypolished. It does not tarnish in air, when heated it bornsandforms the green chromic oxide. Chromium is unstableinoxygen, it immediately produces a thin oxide layer thatisimpermeable to oxygen and protects themetalbelow.

Related Question Answers

Sashka Altuzarra

Professional

Is K2Cr2O7 an acid or base?

Equivalent weight of K2Cr2O7 is 49 g/mol. Here,6e- participate in the reaction, hence chemical equivalent is6.Equivalent weight of K2Cr2O7 in acidic medium is49g/mol.

Paryania Robin

Professional

What is chromate used for?

It is primarily used as a corrosioninhibitor,primer, decorative finish, or to retain electricalconductivity.The process is named after the chromate foundin chromicacid, also known as hexavalent chromium, the chemicalmost widelyused in the immersion bath process whereby thecoating isapplied.

Ankor Sporhase

Professional

What is the formula for chromate?

As you can see from the chemical formula,thereare two different ions - potassium (K) and chromate(CrO4) -which combine to form the compound potassiumchromate. Anion is an atom or molecule that carries a netpositive or negativecharge. The charge of potassium is +1, whilechromate is-2.

Pier Iraguen

Explainer

What is the name for ch3coo?

CH3COO is the chemical formulaforacetate.
It can also be written as CH3CO2- or C2H3O2-. Acetateisa negative ion, often found in aqueoussolution.

Clodomira Muhlstadt

Explainer

Where is chromate found?

Chromium is an essential trace element foundinsoil, water, air, and in the biosphere. It is the fourthmostcommon element in the earth's crust, mostly used tomanufacturestainless steel and other alloys. Chromateallergy is notuncommon and its prevalence rate is reported to be6%.

Kerman Unti

Explainer

What is the name for Cr2O72?

Compound Descriptions:
Formula: Cr2O7
Element System: Cr-O
Element Names: Oxygen, Chromium
Molecular Weight: 215.988 g/mol
Name(s): Chromate (Cr2O72-) Bichromate Chromic acid (H2Cr2O7),ion(2-)Dichromate Dichromate (Cr2O72-) Dichromate ion Dichromateion(Cr2O72-) Dichromate ion(2-) Dichromate(2-)

Gurinder Enticott

Pundit

What color is CrO4?

Preview Flashcards
Front Back
color of co+2 in solution pink
color of mno4- in solution dark purple
color of cro4-2 in solution yellow
color of cr2h7 -2 in solution orange

Samanta De Merced

Pundit

How do you get the oxidation number?

Explanation:
  1. The oxidation number of a free element is always 0.
  2. The oxidation number of a monatomic ion equals the charge oftheion.
  3. The oxidation number of H is +1, but it is -1 in whencombinedwith less electronegative elements.
  4. The oxidation number of O in compounds is usually -2, but itis-1 in peroxides.

Maty Cacicedo

Pundit

What is the name of cro3?

Chromium trioxide is an inorganic compound withtheformula CrO3. It is the acidic anhydride ofchromicacid, and is sometimes marketed under thesamename.

Tibor Solans

Pundit

Why is Cr2O3 amphoteric?

As charge increases, electronegativity increase andthusoxide become acidic. This also applies for elements havingmultipleoxides. Chromium(III) oxide is amphoteric.Althoughinsoluble in water, it dissolves in acid to producehydratedchromium ions, [Cr(H2O)6]3+ which react with base to givesalts of[Cr(OH)6]3−.

Madhu Albero

Pundit

What is the charge of chromium?

Chromium exhibits a wide range ofoxidationstates, but chromium being ionized into a cationwith apositive 3 charge serves as chromium's moststableionic state.

Arsalan Jung

Teacher

Is Cr2O3 toxic?

A team of Brazilian researchers has found thatchromiumIII oxide (Cr2O3) nanoparticles caused acutetoxiceffects on aquatic organisms. The particles are used inpigmentsfor ceramics, dyes, paints and cosmetics but theirtoxicityis little known.

Yesica Poleo

Teacher

Is Cr2O3 ionic or molecular?

Chromium trioxide (Cr2O3) is anioniccompound composed of 2 Cr3+ ions, and 3(O)2-ions.

Lusia Pahlmann

Teacher

What type of compound is Na3P?

Binary Ionic Compounds
A B
sodium oxide Na2O
sodium sulfide Na2S
sodium nitride Na3N
sodium phosphide Na3P

Ponç Aniorte

Teacher

How are chemical compounds named?

An ionic compound is named first byitscation and then by its anion. The cation has the same name asitselement. For example, K+1 is calledthepotassium ion, just as K is called the potassium atom. To nameacompound, the cation name and the anion namedareadded together.

Loreto Crepaldi

Reviewer

What is nickel oxide used for?

It is used in the ceramic industry to makefrits,ferrites, and porcelain glazes. The sintered oxideisused to produce nickel steel alloys.

Bassam Condal

Reviewer

Why is chromium toxic?

When inhaled, chromium compounds arerespiratorytract irritants and can cause pulmonary sensitization.Chronicinhalation of Cr(VI) compounds increases the risk of lung,nasal,and sinus cancer. Severe dermatitis and usually painlessskinulcers can result from contact with Cr(VI)compounds.

Souhail Holzwarth

Reviewer

What is the symbol for dichromate?

K2Cr2O7

Florentino Toumi

Reviewer

What is dichromate used for?

Potassiumdichromate,K2Cr2O7, is acommon inorganicchemical reagent, most commonly used as anoxidizing agentin various laboratory and industrial applications.As with allhexavalent chromium compounds, it is acutely andchronicallyharmful to health.

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30th May, 2020

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