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sasho [114]
3 years ago
11

An unknown solution has a pH of 7. how would you classify this solution?

Chemistry
2 answers:
Mrac [35]3 years ago
7 0

Answer:

Option A. neutral

Explanation:

we know that

The pH is a number that describe the concentration of hydrogen ions in the solution. A solution's pH will be a number between 0 and 14.

A solution with a pH of 7 is classified as neutral.  (pH=7)

If the pH is lower than 7, the solution is acidic.  (pH < 7)

If the  pH is higher than 7, the solution is basic.  (pH > 7)

In this problem we have a solution that has a pH=7

therefore

The solution is classified as neutral

aksik [14]3 years ago
7 0

<u>Answer:</u> The correct answer is Option A.

<u>Explanation:</u>

pH is defined as the negative logarithm of hydrogen ion concentration present in the solution.

Mathematically,

pH=-\log [H^+]

  • If the solution has high hydrogen ion concentration, then the pH will be low and the solution will be acidic. The pH range of acidic solution is 0 to 6.9
  • If the solution has low hydrogen ion concentration, then the pH will be high and the solution will be basic. The pH range of basic solution is 7.1 to 14
  • The solution having pH equal to 7 is termed as neutral solution.

Hence, the correct answer is Option A.

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Complete the mechanism for the electrophilic addition wtien the alkene is treated with water in acid.
ser-zykov [4K]
Alkenes undergo Electrophillic Addition Reactions. Electrophiles are added across double bond. In given reaction the H⁺ is first added across double bond as the double bond being denser in electron density act as a neucleophile. A carbocation formed depends upon the nature of Alkene, if alkene is symmetrical (as in our case) then positive charge can get any position, but in case of unsymmetrical alkene the positive charge will go to that carbon which is attached to more carbon atoms. Then the water molecule attacks the carbocation and forms alcohol.

5 0
4 years ago
People with diabetes have to monitor and restrict their sugar intake. What volume of apple juice could
melamori03 [73]

The volume of apple juice could  a diabetic person drink : 100 ml

<h3>Further explanation</h3>

Given

sugar allowance = 8 g

sugar concentration of apple juice : 8.0% w/v

Required

Volume of apple juice

Solution

The concentration of a substance can be expressed in several quantities The concentration shows the amount of solute in a unit of the amount of solvent.

% w/v = mass of solute (weight) in g / 100 ml solution

So for 8% w/v = 8 g of sugar(solute) in 100 ml of apple juice

5 0
3 years ago
How many square centimeters are in an area of 8.50 inch^2
Paha777 [63]

Explanation:

Given parameters:

  Dimension = 8.5in²

we are to convert from in² to cm²

 in² = in x in

 cm² = cm x cm

   1 in = 2.54cm

Using dimensional analysis;

   8.5in² x \frac{2.54cm}{1in}  x \frac{2.54cm}{1in}

        =  54.84cm²

We solved this problem using dimensional analysis where we multiplied the unit with 1.

learn more:

Conversion brainly.com/question/555814

#learnwithBrainly

5 0
3 years ago
Determine the molarity of the sodium ions when 78.0 g Na2S is dissolved in water for a final volume of 1.0 L.
olga55 [171]

Answer:

[Na⁺] = 1.99 M

Explanation:

Na₂S is a ionic salt that can be dissociated.

Dissociation equation is:

Na₂S  →  2Na⁺  +  S⁻²

1 mol of sodium sulfide can give 2 moles of sodium cation.

We convert moles of salt: 78 g . 1mol / 78.06 g = 0.999 moles

As ratio is 1:2, after dissociation we have (0.999 . 2) = 1.998 moles of Na⁺

Molarity is a type of concentration.

It indicates moles of solute in 1 L of solution and in this case, we have 1 L as final voulme.

Moles of Na⁺ are 1.998 moles. Then molarity (mol/L) is:

M =1.99 mol/L  

5 0
3 years ago
PLEASE HELP!
motikmotik

Answer:

lithosphere

Explanation:

its found in the earth :)))

3 0
3 years ago
Read 2 more answers
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