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Formic acid (CH2O2) is used as an antibacterial on livestock feed. A sample of formic acid has been found to have a pH = 3, and data shows it has a Ka = 1.6E-4 M. What is the concentration of the sample?

This question tests your knowledge on weak acids, pH, Ka and equilibrium. (Note: E notation has been used, E-3 is x10 -3 ). Formic acid is a weak acid and so does not fully dissociate, the degree of dissocia...
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Answered by Kieran O. • Chemistry tutor
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How to balance chemical equations (harder level question): C6H12O6 + O2 --> CO2 + H2O

C6H12O6 + O2 --> CO2 + H2O First we will list all the elements and count the number of each on both sides to compare both sides.C6 H12 O8 / C1 O3 H2 Remember we cannot change the small numbers, only the b...
MW
Answered by Manon W. • Chemistry tutor
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Describe how ionic and covalent bonding forms compounds (6). You may use diagrams to help.

Compounds are structures where two or more elements are chemically bonded together. These chemical bonds are ionic, covalent or metallic depending on the elements involved. Ionic bonds, form between a metal ...
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Answered by Anthony H. • Chemistry tutor
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Technetium is an element commonly used in medicine. A technetium atom is represented as ^99 _43 Tc. Give the number of protons, neutrons and electrons in this atom of technetium.

99 43 Tc (how it should be represented in question) Number of protons = 43 Number of neutrons = 56 Number of electrons = 43 Technetium is given here in nuclear notation. This is where the top number represen...
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Answered by Daniel J. • Chemistry tutor
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What is covalent bonding?

The sharing of electrons between two atoms
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Answered by Maggie L. • Chemistry tutor
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