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navik [9.2K]
3 years ago
10

What is the hydronium ion concentration in an aqueous hydrobromic acid solution with a pH of 4.530?

Chemistry
1 answer:
Aloiza [94]3 years ago
4 0

Answer:

2.951 × 10⁻⁵ M

Explanation:

Let's consider the acid reaction of hydrobromic acid according to Brönsted-Lowry acid-base theory.

HBr(aq) + H₂O(l) ⇒ Br⁻(aq) + H₃O⁺(aq)

Given the pH = 4.530, we can calculate the concentration of the hydronium ion using the following expression.

pH = -log [H₃O⁺]

[H₃O⁺] = antilog -pH = antilog -4.530 = 2.951 × 10⁻⁵ M

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EleoNora [17]

Answer:

54 g

Explanation:

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mass of 1 mole of H2O= mass of h2 + mass of o

= 2× mass of h +mass of o

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3moles of water = 18×3g= 54g

6 0
3 years ago
How many molecules are there in 8.25 moles of CaHia?
expeople1 [14]

The number of molecules : 4.967 x 10²⁴

<h3>Further explanation   </h3>

A mole is a number of particles(atoms, molecules, ions)  in a substance

This refers to the atomic total of the 12 gr C-12  which is equal to 6.02.10²³, so 1 mole = 6.02.10²³ particles  

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n = mol

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The number of molecules :

\tt 8.25\times 6.02\times 10^{23}=4.967\times 10^{24}

8 0
3 years ago
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Lady bird [3.3K]

Answer:

2

Explanation:

7 0
2 years ago
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arlik [135]

Answer:

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Explanation:

Hello,

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