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Murrr4er [49]
3 years ago
8

Which of these compounds is a proton acceptor ?

Chemistry
1 answer:
Vikki [24]3 years ago
5 0

Answer:

Sodium Hydroxide

Please mark me as brainlest because I have help you pleaseeeee.

Explanation:

Sodium hydroxide is a common proton acceptor also known as lye. It is the active ingredient in oven cleaners and drain cleaners because it can react with fats to produce compounds that dissolve in water. It is also used in many school laboratories to demonstrate acid-base reactions.

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Which of the following you is true for a limiting reactant
skad [1K]

Answer:

  • <em><u>C) The limiting reactant has the lowest ratio of moles available / coefficient in the balanced equation.</u></em>

Explanation:

Please, find attached a complete question to determine which of the statements is or are true for a limiting reactant in a chemical equation.

First, remember that the limiting reactant is the substance that is consumed completely while the excess reactant is the substance that does not react completely.

The limiting reactant is found comparing the stoichiometry ratio and the actual ratio between the reactants.

The stoichiometry ratio is found using the coefficientes of the chemical equation.

For illustration, assume the general chemical equation:

         aA+bB\rightarrow cC+dD

The stoichiometric ratio of the reactants is:

          a\text{ }moles\text{ }of\text{ }A/b\text{ }moles\text{ }of\text{ }B

If the ratio of the available moles of substance A to the available moles of  substance B is greater than the stoichiometric ratio, it means that there are more moles of the substance A than what is needed to react with the available moles of substance B, then A will be in excess and B will B the limiting reactant.

If, on the contrary, the ratio of the available moles of substance A to the available moles of  substance B is is less than the stoichiometric ratio, then substance A is less than the necessary to make the all the moles of substance B react, meaning that the substance A will limit the reaction (it will be consumed completely), while the substance B will be in excess.

As for the options:

<em><u>A) The limiting reactant is has the lowest coefficient in a balanced equation.</u></em>

This is false, since it is not the magnitude of the coefficiente what determines the limiting reactant, but the comparison of the ratios.

<u><em>B) The limiting reactant is the reactant for which you have the fewest number of moles.</em></u>

This is false because it is not the number of moles what determines the limiting reactant , but the comparison of the ratios.

<u><em>C) The limiting reactant has the lowest ratio of moles available / coefficient in the balanced equation.</em></u>

This is true as proved below.

The stoichiometric ratio of the reactants is:

          a\text{ }moles\text{ }of\text{ }A/b\text{ }moles\text{ }of\text{ }B

The actual ratio is:

         available\text{ }moles\text{ }of\text{ }A/available\text{ }moles\text{ }of\text{ }B

Assume the first ratio is less than the second (which describes when the substance A is in excess and the limiting reactant is the substance B).

a\text{ }moles\text{ }of\text{ }A/b\text{ }moles\text{ }of\text{ }B

Change the relation to show the ratios of moles available of each substance to the cofficient in the chemical equation:

available\text{ }moles\text{ }of\text{ }B/b\text{ }moles\text{ }of\text{ }B

Then, in the scenary that the limiting reactant is the substance B, the ratio of the left is lower than the ratio of the right, which is the same that limiting reactant has the lowest ratio of moles available / coefficient in the balanced equation.

<em><u>D) The limiting reactant has the lowest ratio of coefficients in the balanced eqution/moles available.</u></em>

<em><u /></em>

This ratio is the inverse of the ratio of the previous statement, thus the relation is inverse, and, since the previous statement was true, this statement is false.

3 0
3 years ago
How many kilowatt hours does it take to lift an apple that weighs 100g 1 meter.(use 9.8 kg
kati45 [8]

Answer:

The answer to your question is   Power = 0.98 W  or 9.8 x 10⁻⁴ kW

Explanation:

Data

Power = ?

mass = 100 g = 0.1 kg

distance = 1 m

gravity = 9.8 m/s²

Formula

Power = Work / time

Process

1.- Calculate the Work

      Work = Force x distance

      Force = mass x gravity

      Work = mass x gravity x distance

      Work = (0.1 kg)(9,8)(1)      

      Work = 0.98 J

2.- Calculate the power

       Power = 0.98 J / 1 h

       Power = 0.98 W  or 9.8 x 10⁻⁴ kW

     

3 0
3 years ago
Why might an idea or hypothesis be discarded?
miv72 [106K]

Answer:

A

Because That is the right choice

7 0
3 years ago
Using your answers from part C, complete the chemical formula of each compound. If the number of ions is 1, leave that
Amiraneli [1.4K]

Answer:

1;1, 2;1, 3;1, 1;2, 1;1, 3;2, 1;3, 2;3, 1;1.

I hope this will help.

6 0
3 years ago
The cell wall in plants functions to prevent the cell membrane from breaking when too much water enters the cell. When too much
Gnoma [55]

Answer:

<h2>                                   YOUR WELCOME</h2>
8 0
3 years ago
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