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Molodets [167]
3 years ago
13

Chromium(III) sulfate is a transition metal compound containing the metal chromium and the polyatomic ion sulfate. The oxidation

state of chromium in this compound is , and the chemical formula of the compound is ( ) .
Chemistry
2 answers:
STatiana [176]3 years ago
6 0

Answer:

The answer to your question is: Oxidation number is III,

formula     Cr₂(SO₄)₃

Explanation:

Data

Chromium (III) sulfate

Oxidation state of Cr = ?

Chemical formula

Process

The oxidation number of Chromium is given in roman numerals, then the oxidation number is III.

Chemical formula              Cr₂(SO₄)₃

schepotkina [342]3 years ago
5 0

Answer:

Chromium oxidation state is 3.

Formula Cr2(SO4)3

Explanation:

At the beggining of the exercise, the chromium sulfate, says the oxidation state of chromium in romans numbers (III). This number usually indicates the oxidation state of any element. In this case the Chromium shouldhave an oxidation state of 3.

Now, in order to form the chromium(III) sulfate we need to make a reaction between the sulfuric acid and chromium. In this case:

Cr + H2SO4 ---------> Cr2(SO4)3 + H2O

That's why the chromium sulfate has that formula.

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3 years ago
What happens when lead nitrate and potassium iodide are mixed?
lisov135 [29]

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Explanation: A yellow precipitate o lead iodide is formed. see equation of reaction below: 2KI + Pb(NO3)2 → PbI2 + 2K(NO3)2

Th PbI2 is the insoluble yellow precipitate

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Write word equation for reaction between sodium and sulphur​
White raven [17]

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2Na + S —> Na2S

Hope this helps.

4 0
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Please help!! <br><br> Is this an:<br><br> Acid<br><br> Base <br><br> Neither
Liono4ka [1.6K]

Answer:

it is a weak acid

acid

Explanation:

formaldehyde is a weak acid (pK greater than 13),

3 0
1 year ago
Ni2+(aq) + 6 NH3(aq) ⇌ Ni(NH3)6 2+(aq)
Jet001 [13]

Answer:

a) ΔGº= -49,9 KJ/mol = - 50 KJ/mol

b) The reaction  goes to the right to formation of products

c) ΔG= 84,42 KJ/mol. The direction is to reactive, to the left

Explanation:

a) ΔGº= - RTLnKf

You need to convert Cº to K. 25ºC=298K

Then, ΔGº= - 3,814 J/molK * 298K* Ln(5.6 *10^8)= - 49906 J/mol = -49,9 KJ/mol = - 50 KJ/mol

b) The ΔGº < 0, that means the direct reaction is spontaneous when te reactive and products are in standard state. In other words the reaction goes to the right, to formation of products

c) The general ecuation for chemical reaction is aA + bB → cD + dD. Thus

ΔG=ΔGº + RTLn (([C]^c*[D]^d)/[A]^a*[B]^b)

In this case,

ΔG=ΔGº + RTLn ([Ni(NH3)62+] / [Ni2+]*[NH3]^6 )= 84417 J/mol =84,42 KJ/mol

ΔG >0 means the reaction isn't spontaneous in the direction of the products. Therefore the direction is to reactive, to the left

8 0
3 years ago
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