Chemistry, 28.12.2019 01:31 michellemunoz250

An aqueous solution athas aconcentration of. calculate theconcentration. be sure your answer has 1 significant digits.

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Answer from: anaroles04

The question is incomplete, here is the complete question.

An aqueous solution at 25°C has a OH^- concentration of $1.9\times 10^{-8}M$ . Calculate the H_3O^+ concentration. Be sure your answer has the correct number of significant digits.

The hydronium ion concentration of the solution is $5.25\times 10^{-7}$

Explanation:

To calculate pOH of the solution, we use the equation:

$pOH=-\log[OH^-]$

We are given:

$[OH^-]=1.9\times 10^{-8}M$

Putting values in above equation, we get:

$pOH=-\log(1.9\times 10^{-8})$

pOH=7.72

To calculate the hydronium ion concentration, we first calculate pH of the solution, which is:

pH + pOH = 14

pH + 7.72 = 14

pH = 14 - 7.72 = 6.28

To calculate the hydronium ion concentration of the solution, we use the equation:

$pH=-\log[H_3O^+]$

We are given:

pH = 6.28

Putting values in above equation, we get:

$6.28=-\log[H_3O^+]$

$[H_3O^+]=5.25\times 10^{-7}$

Hence, the hydronium ion concentration of the solution is $5.25\times 10^{-7}$

Answer from: Quest

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Answer from: Quest

explanation:

the largest database of organic compounds lists about 10 million substances, which include compounds originating from living organisms and those synthesized by chemists. the number of potential organic compounds has been estimated at 1060—an astronomically high number. the existence of so many organic molecules is a consequence of the ability of carbon atoms to form up to four strong bonds to other carbon atoms, resulting in chains and rings of many different sizes, shapes, and complexities. the simplest organic compounds contain only the elements carbon and hydrogen, and are called hydrocarbons. even though they are composed of only two types of atoms, there is a wide variety of hydrocarbons because they may consist of varying lengths of chains, branched chains, and rings of carbon atoms, or combinations of these structures. in addition, hydrocarbons may differ in the types of carbon-carbon bonds present in their molecules. many hydrocarbons are found in plants, animals, and their fossils; other hydrocarbons have been prepared in the laboratory. we use hydrocarbons every day, mainly as fuels, such as natural gas, acetylene, propane, butane, and the principal components of gasoline, diesel fuel, and heating oil. the familiar plastics polyethylene, polypropylene, and polystyrene are also hydrocarbons. we can distinguish several types of hydrocarbons by differences in the bonding between carbon atoms. this leads to differences in geometries and in the hybridization of the carbon orbitals.

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An aqueous solution athas aconcentration of. calculate theconcentration. be sure your answer has 1 s...