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deff fn [24]
3 years ago
8

Do states need to be written in a chemical equation

Chemistry
1 answer:
Reptile [31]3 years ago
4 0
Yes. because equation balances the number of particles.
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Answer:

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A blank is a condition that strays from normal homeostasis.
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I have 50.00 mL of 0.100 M ethyl amine (C2H5NH2). I gradually add a solution of 0.025 M nitric acid (HNO3) to the ethyl amine so
sergeinik [125]

Answer:

4.00 is the pH of the mixture

Explanation:

The ethyl amine reacts with HNO3 as follows:

C2H5NH2 + HNO3 → C2H5NH3⁺ + NO3⁻

To solve this question we need to find the moles of ethyl amine and the moles of HNO3:

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<em>Moles HNO3:</em>

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That means HNO3 is in excess. The moles in excess are:

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2.5x10⁻⁵ moles HNO₃

In 50 + 201mL = 251mL = 0.251L:

2.5x10⁻⁵ moles HNO₃ / 0.251L = 9.96x10⁻⁵M = [H+]

As pH = -log [H+]

pH = -log 9.96x10⁻⁵M

pH = 4.00 is the pH of the mixture

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Explain how percent yield is calculated
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