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3 years ago

What type of ion does the substance give off if it turns the pH paper blue?

Chemistry

2 answers:

koban [17]3 years ago

6 0

Answer:

The alkaline solution that turns the ph paper to blue and it produces hydrogen ions.

<u>Explanation:</u>

pH is defined as a measure of acid or alkaline level in the water and it indicates the amount of hydrogen molecules in the water.
pH value ranges from [0-14], for acidic components pH<7 and base pH>7 and for neutral pH=7.
Litmus paper measures the pH values and for acid the color of litmus paper changes from blue to red.
For base solutions, the color changes from red to blue.
Alkaline solutions change the pH value from red to blue, when it is dissolved in water.

olga_2 [115]3 years ago

5 0

Answer:

Alkaline

Explanation:

In an alkaline solution, red litmus paper turns blue. When an alkaline compound dissolves in water, it produces hydroxide ions, which cause the solution to become alkaline.

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bixtya [17]

So, unlike red giants, red supergiants are simply bright, red stars. It so happens that they may be in the same evolutionary state, but it is also possible that they have moved on. For example, most massive stars will appear as red supergiants while helium is fused into carbon in the core.

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3 years ago

Read 2 more answers

What has more particles: a mole of hydrogen or a mole of uranium?

algol [13]

Answer

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Explanation:

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2 years ago

What is an ephemeral stream? A)one that flows only after rainfall B) one that flows only in flat lands C) one that is formed onl

kupik [55]

Answer: Option (a) is the correct answer.

Explanation:

The stream that flows during or after the rainfall is called an ephemeral stream. This stream occurs in areas where there is less rainfall or deficiency of moisture.

The stream that flows only in flat lands is called as river.

Mechanical weathering results in the breaking of rocks causes ice wedging.

Chemical weathering results in the change in molecular structure of rocks and soil.

Thus, it can be concluded that option (a) is the correct answer.

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3 years ago

Hydrogen bonds are in the family of Van der Waals forces. They are weaker than ionic and covalent bonds but they cause interesti

-Dominant- [34]

Answer:

The answer is B. Van der Waals forces are weaker than ionic and covalent bonds.

Explanation:

In general, if we arrange these molecular forces from the strongest to weakest, it would be like this:

Covalent bonds > Ionic bonds > Hydrogen bonds > Dipole-Dipole Interactions > Van der Waals forces

Covalent bonds are known to have the strongest and most stable bonds since they go deep and into the inter-molecular state. A diamond is an example of a compound with this characteristic bond.

Ionic bonds are the next strongest molecular bond following covalent bonds. This is due to the protons and electrons causing an electro-static force which results to the strong bonds. An example would be Sodium Chloride (NaCl), which when separated is Na⁺ and Cl⁻.

Van der Waals forces, also known as Dispersion forces, are the weakest type of molecular bonds. They are only formed through residual molecular attractions when molecules pass by each other. It doesn't even last long due to the uneven electron dispersion. It can be made stronger by adding more electrons in the molecule. This kind of molecular bonds appear in non-polar molecules such as carbon dioxide.

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3 years ago

Of the following substances, ________ has the highest boiling point. Of the following substances, ________ has the highest boili

kolezko [41]

Answer:

Of the following substances, <u>PCl₃</u> has the highest boiling point

Explanation:

The given substances and their boiling point from online resources are;

Krypton, Kr, boiling point = -153.4°C

Chlorine gas, Cl₂, boiling point = -34.6°C

Borane, BH₃, (transient compound), boiling point of the dimer it forms B₂H₆ = -164.85°C

Methane, CH₄, boiling point = -161.6°C

Phosphorus trichloride, PCl₃, boiling point = 76.1°C

Therefore, given that PCl₃ is a volatile liquid at room temperature, while the other substances are gases and that PCl₃ has the highest boiling point of all the substances of 76.1°C, the substance with the highest boiling point is PCl₃.

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3 years ago