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3 years ago

A coke has a ph of 3.5. this means that it has an excess of ___ ions and would be called a(n) _.

Chemistry

2 answers:

charle [14.2K]3 years ago

7 0

Answer:

A coke has a pH of 3.5. this means that it has an excess of <em><u>hydrogen </u></em>ions and would be called an <em><u>acidic</u></em>.

Explanation:

The pH of the solution id the negative logarithm of hydrogen ion concentration in an aqueous solution.

$pH=-\log[H^+]$

Higher the pH value lessor the hydrogen ion concentration in the solution.
Lower the pH value higher the hydrogen ion concentration in the solution.

The pH of the coke = 3.5

$3.5=-\log[H^+]$

$[H^+]=0.0003162 m$

Anuta_ua [19.1K]3 years ago

3 0

PH (potential of hydrogen) is a numeric scale that is used to show the acidity or basicity of an aqueous solution. It tells how acidic or alkaline a substance is . The pH values ranges from 0 to 14, such that acidic solutions have values between 1 to 6.9 with most acidic having a pH value of 1 and those that are basic have values from 7.1 to 14, with most acidic having a value of 14. Acidic compounds contain replaceable hydrogen ions while basic compounds contain hrdroxyl ions. In this case, a coke has a pH of 3.5 (acidic) which means that it has an excess of hydrogen ions (H+) and would be called an acid.

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The empirical formula of the following compounds 0.903 g of phosphorus combined with 6.99 g of bromine.

<h3>What is empirical formula?</h3>

The simplest whole number ratio of atoms in a compound is the empirical formula of a chemical compound in chemistry. Sulfur monoxide's empirical formula, SO, and disulfur dioxide's empirical formula, S2O2, are two straightforward examples of this idea. As a result, both the sulfur and oxygen compounds sulfur monoxide and disulfur dioxide have the same empirical formula.

<h3>How to find the empirical formula?</h3>

Convert the given masses of phosphorus and bromine into moles by multiplying the reciprocal of their molar masses. The molar masses of phosphorus and bromine are 30.97 and 79.90 g/mol, respectively.

Moles phosphorus = 0.903 g phosphorus $\frac{mol phosphorus}{ 30.97 g phosphorus}$ = 0.0293 mol

Moles bromine 6.99 g bromine $\frac{mol bromine}{79.90 g bromine}$ =0.0875 mol

The preliminary formula for compound is P0.0293Bro.0875. Divide all the subscripts by the subscript with the smallest value which is 0.0293. The empirical formula is P1.00Br2.99 ≈ P₁Br3 or PBr3

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A coke has a ph of 3.5. this means that it has an excess of _______ ions and would be called a(n) _____.

A coke has a ph of 3.5. this means that it has an excess of ___ ions and would be called a(n) _.