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3 years ago

Which chemical equation describes an acid-base neutralization reaction?

Chemistry

1 answer:

Natali5045456 [20]3 years ago

3 0

HCL+NAOH=NACL+H2O
HCL=ACID
NAOH=Base
NACL=SALT
H2O=Wate

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To create an ion you simply need to add or take away an electron true or false

BigorU [14]

Answer:

True

Explanation:

ion: an atom or molecule with a net electric charge due to the loss or gain of one or more electrons.

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3 years ago

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What is the oxidation state, d electron count, and coordination number respectively of the cobalt ion in [CoBr(NH3)4]PO4? What i

Law Incorporation [45]

Answer:

The correct option is: +4, 5, and 5

Explanation:

A coordination complex consists of a central metal atom or ion bonded to ligands by coordinate covalent bonds. The ligands and the central metal together form the coordination sphere.

[CoBr(NH₃)₄]PO₄

Central metal atom - Co

Coordination sphere consists of 1 Br⁻ and 4 NH₃ ligands

Therefore, the coordination number= 5

Let the oxidation state of Co = x

Oxidation state of Br⁻ ligand = (-1)

Oxidation state of NH₃ ligand = 0

Oxidation state of PO₄³⁻ ligand = -3

∴ x + (-1) × 1 + 0 × 4 + (-3) × 1 = 0

⇒ x = +4

Oxidation state of Co = +4

Electron configuration of Co in ground state: [Ar] 3d⁷ 4s²

Electron configuration of Co in +4 oxidation state: [Ar] 3d⁵ 4s⁰

Therefore, the number of d electrons in cobalt ion = 5

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3 years ago

The smallest unit which maintains the physical properties of a compound is a(n) _____. atom element molecule alloy

kkurt [141]

<h3>Answer:</h3>

The smallest unit which maintains the physical properties of a compound is a Molecule.

<h3>Explanation:</h3>

Option-A, Atom is incorrect because statement is asking about the physical properties of a compound. Therefore, as compound is made up of two or more, same or different atoms hence, atom can not be the correct answer.

Option-B, Element is also incorrect because Element can be mono-atomic like He, Ne, Ar e.t.c or a molecules like N₂, O₂, F₂ e.t.c but it can't be a compound because in compound the joining elements are different as all compounds are molecules but all molecules are not compounds.

Option-C, Molecule is the correct answer because all compounds are molecules unless the atoms forming the compound are different.

Option-D, Alloy is also incorrect because Alloys are a homogeneous mixture of two or more metals. Hence, they can't be considered as compounds as they can be separated by physical means.

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3 years ago

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Ionic compounds form ________ from a repeating pattern of ions.

shusha [124]

Answer:

crystals

It's in my science book, my class just finished this chapter.

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2 years ago

Express 0.0000046 in scientific notation. [?]x10

aivan3 [116]

Answer:

4.6 x 10⁻⁶

Explanation:

In scientific notation, the number should be written in between 1 - 10 and multiplied by 10 raised to a power.

In this case, the decimal place should be placed in-between the 4 and the 6. To do this, you must move the decimal place 6 digits to the right. When you move the decimal place to the right, the 10 should be raised to a negative number.

As such, 0.0000046 in scientific notation is 4.6 x 10⁻⁶.

3 0

1 year ago