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3 years ago

Write a net ionic equation to show that benzoic acid, C6H5COOH, behaves as a Brønsted-Lowry acid in water.

Chemistry

1 answer:

Nitella [24]3 years ago

5 0

Answer:

H⁺(aq) + H₂O(l) ⇄ H₃O⁺(aq)

Explanation:

According to Brönsted-Lowry acid-base theory, an acid is a substance that donates H⁺. Let's consider the molecular equation showing that benzoic acid is a Brönsted-Lowry acid.

C₆H₅COOH(aq) + H₂O(l) ⇄ C₆H₅COO⁻(aq) + H₃O⁺(aq)

The complete ionic equation includes all the ions and molecular species.

C₆H₅COO⁻(aq) + H⁺(aq) + H₂O(l) ⇄ C₆H₅COO⁻(aq) + H₃O⁺(aq)

The net ionic equation includes only the ions that participate in the reaction and the molecular species.

H⁺(aq) + H₂O(l) ⇄ H₃O⁺(aq)

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At a certain temperature, 0.4011 mol of N 2 and 1.501 mol of H 2 are placed in a 3.00 L container. N 2 ( g ) + 3 H 2 ( g ) − ⇀ ↽

kenny6666 [7]

Answer:

Kc = 16.6

Explanation:

Step 1: Data given

Number of moles N2 = 0.4011 moles

Number of moles H2 = 1.501 moles

Volume = 3.00 L

At equilibrium, 0.1801 mol of N 2 is present

Step 2: The balanced equation

N2(g) + 3H2(g) ⇆ 2NH3(g)

Step 3: Calculate amount of N2 reacted

moles N2: 0.4011 mol - 0.1801 mol = 0.221 mol

For 1 mol N2 therewill react 3 moles of H2 to produce 2moles of NH3

Moles H2 reacted= 3 * 0.221 mol = 0.663 mol es

Moles NH3 produced = 2 * 0.221 mol = 0.442 mol es

Step 4: Amount of moles at equilibrium

Moles N2 = 0.1801 mol

[N2] = 0.1801 mol / 3.0 L = 0.06003 M

Moles H2 =1.501 moles - 0.663 mol = 0.838 moles

[H2] = 0.838 moles / 3.0 L = 0.2793 M

Moles NH3 = 0.442 mol

[NH3] = 0.442 mol / 3.0 L = 0.1473 M

Step 5: Calculate Kc

Finally, we can calculate Kc:

Kc = [NH3]² / ([N2] [H2]³)

Kc = (0.1473²)/(0.06003 *0.2793³)

Kc = 16.6

5 0

3 years ago

50.0 g N204 (92.02 g/mol) react with 45.0 g N2H4 (32.05 g/mol) forming nitrogen gas, N2

IrinaVladis [17]

Answer:

The excess reactant is N2H4 and the leftover mass is 10.17g.

Explanation:

Step 1:

The balanced equation for the reaction.

N2O4 + 2N2H4 —> 3N2 + 4H2O

Step 2

Determination of the masses of N2O4 and N2H4 that reacted from the balanced equation:

Molar mass of N2O4 = 92.02 g/mol

Mass of N2O4 from the balanced equation = 1 x 92.02 = 92.02g

Molar mass of N2H4 = 32.05 g/mol

Mass of N2H4 from the balanced equation = 2 x 32.05 = 64.1g

From the balanced equation above, 92.02g of N2O4 reacted with 64.1g of N2H4.

Step 3:

Determination of the excess reactant. This is illustrated below:

From the balanced equation above, 92.02g of N2O4 reacted with 64.1g of N2H4.

Therefore, 50g of N2O4 will react with = (50 x 64.1)/92.02 = 34.83g of N2H4.

From the calculations made above, we can see that only 34.83g of N2H4 reacted out of 45g that was given. Therefore, N2H4 is the excess reactant.

Step 4:

Determination of the mass of excess reactant that is leftover.

The excess reactant is N2H4 and the leftover mass can be obtained as follow:

Mass of N2H4 given = 45g

Mass of N2H4 that reacted = 34.83g

Leftover mass of N2H4 =..?

Leftover mass of N2H4 = (Mass of N2H4 given) – (Mass of N2H4 that reacted)

Leftover mass of N2H4 = 45 – 34.83

Leftover mass of N2H4 = = 10.17g.

7 0

4 years ago

A very specific procedure scientists follow when conducting experiments is known as the

PtichkaEL [24]

Answer:

Scientific Method.

Explanation:

A scientific method is basically a method or a process when you conduct an experiment. Normally, the process goes like this:

1. You make like a question or something that you want to investigate, it's like the aim of the experiment.

2. You make an experiment and a hypothesis. A hypothesis is basically a guess on how the results of the experiment would turn out. You don't have to be correct for the hypothesis since there is no right or wrong answer.

3. Conduct the experiment. I don't think this needs a detailed explanation since experiments vary from one another.

4. Collect results. The data you collect come in different ways based on your experiment, but it is crucial you get data so that you can answer your question in 1.

5. Make inferences. You can't directly get a conclusion or answer from the results, so inferences are needed.

6. Craft a conclusion or answer. This is the final step when conducting an experiment and the part where you have the answer you needed when you conducted the experiment :)

5 0

3 years ago

Why are group viia elements very active nonmetals

Marina CMI [18]

I’m not sure what you’re asking but- halogens are among the most active nonmetals due to their electron configuration and number of valence electrons.

7 0

3 years ago

Of the following compounds, which would be the most effective in lowering the melting point of ice on roads? a) CaCl2 b) NaCl c)

zmey [24]

Potassium as it's more reactive than the other two

7 0

4 years ago