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VashaNatasha [74]
2 years ago
15

These two beakers represent solutions of HCl and NaOH. Describe a third beaker showing the ions that remain after the reaction h

as gone to completion.
The third beaker contains __ OH- ion(s), __ Cl- ion(s), __ Na+ ion(s), and __ H+ ion(s)

Chemistry
1 answer:
DENIUS [597]2 years ago
7 0

Number of ions in the third beaker:

4 Cl⁻ ions

5 Na⁺ ions

1 OH⁻ ion

Explanation:

If you mix the backers the following chemical reaction will occur:

HCl + NaOH → NaCl + H₂O

In the ionic form you write the equation:

H⁺ (aq) + Cl⁻ (aq) + Na⁺ (aq) + OH⁻ (aq) → Cl⁻ (aq) + Na⁺ (aq) + H₂O (l)

where:

(aq) - aqueous (dissolved in water)

(l) - liquid

Number of ions in the first beaker:

4 Cl⁻ ions

4 H⁺ ions

Number of ions in the second beaker:

5 Na⁺ ions

5 OH⁻ ions

Number of ions in the third beaker:

4 Cl⁻ ions

5 Na⁺ ions

1 OH⁻ ion

The rest of H⁺ and OH⁻ ion reacted to form water.

Learn more about:

ions

brainly.com/question/269828

brainly.com/question/5042117

#learnwithBrainly

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The net ionic equation for formation of an aqueous solution of nii2 accompanied by evolution of co2 gas via mixing solid nico3 a
Ann [662]

Answer:

NiCO3 (s) + 2H+ (aq) → H2O (l) + CO2 (g) + Ni2+ (aq)

Explanation:

To write the complete ionic equation:

1. Start with a balanced molecular equation.

2. Break all soluble strong electrolytes (compounds with (aq) beside them) into their ions

3. indicate the correct formula and charge of each ion

4. indicate the correct number of each ion

5. write (aq) after each ion

6. Bring down all compounds with (s), (l), or (g) unchanged.

8 0
3 years ago
Please answer my questions. I really need them soon. I will post the links for other questions in the comments.
Assoli18 [71]

Explanation:

option option B is the correct answer of given statement helium-4(He)=2

6 0
2 years ago
Indicate which solution in each pair has the lower pH. Your response should be a four letter "word". The first letter should be
JulijaS [17]

Answer:

bcfh

Explanation:

HClO₄ reacts with water thus:

HClO₄ + H₂O → H₃O⁺ + ClO₄⁻

That means HClO₄ produce H₃O⁺ that decreases pH. That means the higher concentration of HClO₄ decreases pH. Thus, lower pH will be:

b) 0.2 M HClO4

The reaction of NaClO₄ is:

NaClO₄ + H₂O → OH⁻ + HClO₄ + Na⁺

The higher concentration of NaClO₄ the higher production of OH⁻ that increase pH, that means the lower concentration of NaClO₄ the lower pH, thus, the answer is:

<em>c) 0.1 M NaClO or</em>

HF reacts with water thus;

HF ⇄ H⁺ + F⁻

The equilibrium constant is:

k = [H⁺] [F⁻] / [HF] = 3,5x10⁻⁴

For HNO₂ equilibrium is:

HNO₂ ⇄ H⁺ + NO₂⁻

k = [H⁺] [NO₂⁻] / [HNO₂] = 4,5x10⁻⁴

As k value is higher for HNO₂, the concentration of H⁺ will be higher in this system doing the HNO₂ with the lower pH.

f) 0.1 M HNO2

NaOH is a strong base that produce OH⁻ that increase pH, pure water is neutral, thus, the lowe pH is:

h) pure water

I hope it helps!

7 0
3 years ago
Fill in the missing information:
Neko [114]

Answer: 1. Complete Nuclear Symbol : _{22}^{48}{Ti^{4+}}

2. Atomic number : 22

3. Mass number : 48  

4. Charge : 4 +

Explanation:

Atomic number is equal to the number of protons.

Mass number is the sum of number of neelectrons. utrons and number of protons.

Given : no of protons = 22 , thus atomic number = 22

Mass number =  number of neutrons + number of protons

Mass number =  26 + 22 = 48

Also for a neutral atom , the number of protons is equal to the number of electrons. But here electrons are 4 less than protons, which means the atom has lost 4 electrons and thus will have a charge of 4+.

The atomic number is specific to an element, and the element with atomic number 22 is Titanium (Ti). The representation is _{22}^{48}{Ti^{4+}}

3 0
3 years ago
The first method of determining the chemical composition of substances in space was to
ehidna [41]
<span>The first method to determine the chemical composition of a substance in space was using light. By determining red shift in the observed spectrum of light they could determine the elements they were observing. Different elements change the way light behaves and from this scientists can determine the makeup of things such as stars and nebulas.</span>
5 0
2 years ago
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