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Katen [24]
2 years ago
7

Calcium nitrate and ammonium fluoride react to form calcium fluoride, dinitrogen monoxide, and water vapor. What mass of each su

bstance is present after 21.59 g of calcium nitrate and 22.50 g of ammonium fluoride react completely?
Chemistry
1 answer:
Naily [24]2 years ago
4 0

Answer:

hey mate here is your answer

First, we have to know the formula of each of the substances:

calcium nitrate: Ca(NO₃)₂

ammonium fluoride:  NH4F

calcium fluoride: CaF2

dinitrogen monoxide: N2O

water: H2O

Next, we write the unbalanced reaction. We look at each element and count the number per side. The side with the less number of that element should get a coefficient to balance.

please mark me as a brainliest

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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
what is the structure of XeO2F2???i know its hybridization as sp3d but cannot quite understand its diagram in free space,help an
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The shape of XeO₂F₂ is Trigonal bi-pyramidal see-saw tetrahedron (see attached pictures)
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- Remember that we have 5 pairs (4 bond pairs + 1 lone pair) and we have to place lone pair at equatorial position.

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Explanation:

the total mass of reactants is equal to the total mass of products.

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