What are the products of the following reaction: Al + MgCl2

Define an Arrhenius base and describe properties of bases. Use an example to explain how an Arrhenius base will behave in water.

frozen [14]

An Arrhenius base is a molecule that when dissolved in water will break down to yield an $OH^-$ or hydroxide ion in solution.

<h3>What is Arrhenius base?</h3>

An Arrhenius base is a compound that increases the $OH^-$ ion concentration in aqueous solution.

An Arrhenius base is a substance that, when dissolved in an aqueous solution, increases the concentration of hydroxide, or , $OH^-$ ions in the solution.

Bases Properties

Arrhenius bases that are soluble in water can conduct electricity.

Bases often have a bitter taste and are found in foods less frequently than acids. Many bases, like soaps, are slippery to the touch.

Bases also change the colour of indicators. Red litmus turns blue in the presence of a base (see figure below), while phenolphthalein turns pink.

Some bases react with metals to produce hydrogen gas.

Acids (pH < 7.0) react with bases (pH > 7.0) to produce a salt and water. When equal moles of an acid and a base are combined, the acid is neutralized by the base. The resulting mixture will have a more neutral pH.

An Arrhenius acid is a substance that dissociates in water to form hydrogen ions or protons. In other words, it increases the number of $H^+$ ions in the water. In contrast, an Arrhenius base dissociates in water to form hydroxide ions $OH^-$ .

Example, sodium hydroxide, is added to an aqueous solution. NaOH dissociates into sodium, $Na^+$ , and hydroxide, $OH^-$ ions.

Learn more about the Arrhenius bases here:

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8 0

2 years ago

A chemist wishes to mix a solution that is 12% acid. She has on hand 14 liters of a 6% acid solution and wishes to add some 16

Maslowich

Answer:

25 liters of the 16% solution should be added.

Step by Step Explanation:

pure acid amount + pure acid amount = total pure acid amount

So,

0.02*10 + 0.16*x = 0.12*(10+x)

0.02*10 + 0.16x = 0.12*10 + 0.12*x

0.16*x - 0.12*x = 0.12*10 - 0.02*10

(0.16 - 0.12)*x = 0.12*10 - 0.02*10

x = (0.12*10-0.02*10)/(0.16-0.12)=25

Check: (0.2*10+0.16*25)/(10+25) = 0.12 = 12% of concentration of the final mixture. ! Correct !

3 0

3 years ago

What structural feature of lecithin allows it to behave like an emulsifying agent?

stepladder [879]

Lecithin is an emulsifier agent that's composed of 5 smaller molecules: phosphoric acid, choline, glycerol( is the backbone), and two fatty acids.

The fatty acids, which are hydrophobic (afraid of water), makes this substance more similiar to fats and represent the non-polar part of the lecithin.
The phosphate group is the polar portion of the molecule and it's the negatively charged. The choline is positively charged, which readily dissolve in water<span>.

</span><span>Lecithin is a good emulsifier because of these structural features. the hydrophobic contacts with the oil, while the hydrophilic end contacts with the water.</span>

6 0

3 years ago

Definition of emulsifier

pentagon [3]

A substance that stabilizes an emulsion, in particular a food additive used to stabilize processed foods.

3 0

2 years ago

Read 2 more answers

What is the relationship between the source region of an air mass and the properties of the air mass?

Levart [38]

A source region must have certain temperature and humidity properties that can remain fixed for a substantial length of time to affect air masses above it. above it. Air mass source regions occur only in the high or low latitudes; middle latitudes are too variable.

5 0

3 years ago

What are the products of the following reaction: Al + MgCl2 —>