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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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3 years ago

An ideal gas originally at 0.85 atm and 66°C was allowed to expand until its final volume, pressure, and temperature were 94 mL,

svet-max [94.6K]

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Explanation :

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The equation follows:

$\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}$

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$P_2,V_2\text{ and }T_2$ are the final pressure, volume and temperature of the gas

We are given:

$P_1=0.85atm\\V_1=?\\T_1=66^oC=[66+273]K=339K\\P_2=0.60atm\\V_2=94mL\\T_2=43^oC=[43+273]K=316K$

Now put all the given values in above equation, we get:

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3 years ago

What happens when a wire passes through a magnetic field?

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3 years ago

Read 2 more answers

- How many moles of H2O are required to react to form 2.5 grams of CH ?

abruzzese [7]

Answer:

0.312 moles of H2O

Explanation:

no. of moles of ch4= mass ÷ molar mass

=2.5 ÷ 16.04

=0.156 moles of ch4

According to balanced chemical equation

CH4 : H2O

1 mole : 2 moles

0.156 moles : x moles

by cross multiplication

x= (0.156x2) ÷ 1

= 0.312 moles of H2O

7 0

3 years ago

a chemist adds of a calcium bromide solution to a reaction flask. calculate the mass in grams of calcium bromide the chemist has

mestny [16]

The mass of Calcium bromide added in the flask is 29.7 g.

<h3>What is Molarity? </h3>

Molarity is defined as the ratio of number of moles od solute to the number of volume of solution in litres.

Molarity = number of moles/ volume

<h3>Calculation of Moles</h3>

Number of moles = Molarity × volume

Given,

Molarity of Calcium bromide = 0.363 M

Volume of Calcium bromide = 410 mL

= 0.410L

By substituting all the value, we get

Number of moles = 0.363 × 0.410

= 0.148 mol

As we know that,

Molar mass of Calcium bromide = 199.89 g

Mole is defined as the given mass of substance to the molar mass of substance.

Given mass = Moles × Molar mass

= 0.148 × 199.89

= 29.75 g

= 29.7 g (significant digit)

Thus, we calculated that the mass of Calcium bromide added in the flask is 29.7 g.

learn more about Molarity:

brainly.com/question/19517011

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DISCLAIMER:

The above question is incomplete. Below is the complete question

A chemist adds 410.0mL of a 0.363 M calcium bromide solution to a reaction flask. calculate the mass in grams of calcium bromide the chemist has added to the flask. round your answer to 3 significant digits.

4 0

1 year ago

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) _.