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ratelena [41]
3 years ago
5

An HCl solution has a concentration of 9.8 x 10-5 M. What is the pH of this solution

Chemistry
2 answers:
Vilka [71]3 years ago
8 0
C=9.8*10⁻⁵

pH=-lg[H⁺]

HCl = H⁺ + Cl⁻

[H⁺]=c

pH=-lg(9.8*10⁻⁵)=4.0

pH=4.0
Svetach [21]3 years ago
6 0

Answer:

pH of the given HCl solution is 4.0

Explanation:

<u>Given:</u>

Concentration of HCl solution = 9.8*10⁻⁵ M

<u>To determine:</u>

The pH of the solution

<u>Explanation:</u>

pH of a solution refers to the concentration of H+ ions which in turn reflects the acidity of the solution

pH is related to the H+ concentration as follows:

pH = -log[H+} \\\\For\ the \ given\ HCl\ solution\\\\pH = -log(9.8*10^{-5}) = 4.00

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What kind of properties can only be observed when a substance changes into a different substance?
Shkiper50 [21]
<h3>Answer:</h3><h2>Chemical properties</h2><h3>Explanation:</h3>

By its very definition, a chemical property is one which is exhibited as a result of a chemical reaction. This may happen during or after the reaction. This is because in a chemical reaction there is a transformation in the physical composition of the components and this directly affects its chemical properties.

4 0
3 years ago
Choose the words to finish the sentence. After learning about the law of conservation of mass, Sammy became interested in balanc
cestrela7 [59]

The chemical equation is unbalanced and synthesized.

<h3></h3><h3>What is a chemical equation?</h3>

A chemical equation is described as the symbolic representation of a chemical reaction in the form of symbols and chemical formulas.

In a chemical equation, the reactant entities are given on the left-hand side and the product entities is shown on the right-hand side with a plus sign between the entities in both the reactants and the products, and an arrow that indicates towards the products to show the direction of the reaction.

We can conclude that in the chemical equation shown is unbalanced because both amounts of the individual elements and compounds do not reflect on the reactant and product side.

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The complete question is below:

After learning about the law of conservation of mass, Sammy became interested in balancing equations. He knew that the symbol for aluminum was Al and silver tarnish was Ag2S. He also knew that mixing the two chemicals yielded pure silver, or Ag, in an aluminum sulfide solution. Here is the equation showing this reaction:

3 Ag2S + 2 Al → 6 Ag + Al2S3

This equation is (synthesis / unbalanced / replacement / balanced), and it represents a(n) (unbalanced / balanced / synthesized / replaced) chemical reaction.

answer choices:

  • synthesis; balanced

  • balanced; replacement

  • unbalanced; synthesized

  • balanced; balanced

6 0
1 year ago
Acid rain is a term that refers to a mixture of wet and dry deposited material from the atmosphere containing higher than normal
sattari [20]

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Explanation:

3 0
2 years ago
A drop of water with a mass of 0.48 g is vaporized at 100 ∘C and condenses on the surface of a 55- g block of aluminum that is i
bagirrra123 [75]

The final temperature in Celsius of the metal block is 49°C.

<h3>How to find the number of moles ?</h3>

Moles water = \frac{\text{Given mass}}{\text{Molar Mass}}

                     = \frac{0.48\ g}{18\ \text{g/mol}}

                     = 0.0266 moles  

                   

Heat lost by water = 0.0266 mol x 44.0 kJ/mol

                                = 1.17 kJ

                                = 1170 J           [1 kJ = 1000 J]

Heat lost = Heat gained

Heat gained by aluminum = 1170 J  

1170 = 55 x 0.903 (T - 25) = 49.7 T - 1242  

1170 + 1242 = 49.7 T  

T = 48.5°C (49°C at two significant figures)

Thus from the above conclusion we can say that The final temperature in Celsius of the metal block is 49°C.

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7 0
2 years ago
Is a chemical reaction when put salt into fizzy drinks and why
fomenos
Um to my best knowledge I believe  it is the carbonated water 

7 0
3 years ago
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