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valkas [14]
3 years ago
11

If solution A has a pH that is four pH units greater than that of solution B, how much greater is the H3O+ concentration in solu

tion B than in solution A?
Chemistry
1 answer:
sashaice [31]3 years ago
7 0

10⁴

Explanation:

There is usually a 10-time fold change in H₃O+ ions from one pH level to the other. The lower the pH level the higher the H₃O+ ions. Therefore for  solution A that has a pH that is four pH units greater than that of solution B, then solution B will have;

10⁴ more H₃O+ ions than solution A

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trapecia [35]

Answer:

Positive: Save fuel and reduces greenhouse gas

Negative: Harmful to human and animal health ( underwater animals), Hurts the food chain

Explanation:

I got it from a video. Hopefully it helps you.

4 0
3 years ago
How the calculation of the [OH-], pH and % ionization for 0.619 M ammonia (NH3) NH3 + H2O (liq) rightwards harpoon over leftward
fomenos

Answer:

[OH⁻] = 3.34x10⁻³M; Percent ionization = 0.54%; pH = 11.52

Explanation:

Kb of the reaction:

NH3 + H2O(l) ⇄ NH4+ + OH-

Is:

Kb = 1.8x10⁻⁵ = [NH₄⁺] [OH⁻] / [NH₃]

<em>As all NH₄⁺ and OH⁻ comes from the same source we can write: </em>

<em>[NH₄⁺] = [OH⁻] = X</em>

<em>And as </em>[NH₃] = 0.619M

1.8x10⁻⁵ = [X] [X] / [0.619M]

1.11x10⁻⁵ = X²

3.34x10⁻³ = X = [NH₄⁺] = [OH⁻]

<h3>[OH⁻] = 3.34x10⁻³M</h3><h3 />

% ionization:

[NH₄⁺] / [NH₃] * 100 = 3.34x10⁻³M / 0.619M * 100 = 0.54%

pH:

As pOH = -log [OH-]

pOH = 2.48

pH = 14 - pOH

<h3>pH = 11.52</h3>
5 0
3 years ago
If a system is left to change spontaneously, in what state will it end?
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Answer:

The state with the lowest possible energy consistent with the state of maximum disorder

so letter A

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A 50.00 g sample of an unknown metal is heated to 45.00°C. It is then placed in a coffee-cup calorimeter filled with water. The
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First, in order to calculate the specific heat capacity of the metal in help in identifying it, we must find the heat absorbed by the calorimeter using:
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Next, we use the same formula for the metal as the heat absorbed by the calorimeter is equal to the heal released by the metal.

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The specific heat capacity of the metal is 0.165 cal/gC
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What is the answer A,B,C,D
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