Calculate the volume of water which was liberated during the decomposition of hydrogen peroxide.

Chemistry

1 answer:

nikitadnepr [17]2 years ago

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The answer is :

The normal equation for the decomposition of hydrogen peroxide indicates that 2 vol. peroxide vapor should give rise to 2 vol. water vapor and 1 vol. oxygen.

What is hydrogen peroxide ?

Hydrogen peroxide is water (H2O) with an extra oxygen molecule (H2O2).
The extra oxygen molecule oxidizes, which is how peroxide gets its power says Dr. Beers.
This oxidation kills germs and bleaches color from porous surfaces like fabrics.
Hydrogen peroxide is found in biological systems including the human body.
Enzymes that use or decompose hydrogen peroxide are classified as peroxidases.

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In a 0.20 M solution, a weak acid is 3.0% dissociated.(a) Calculate the [H₃O⁺] , pH , [OH⁻], and pOH of the solution.

marin [14]

H₃O⁺ = $6.0$ × $10^{-3}$

OH = $1.7$ × $10^{-12}$

pH = 2.22

pOH = 11.78

The term pH, which originally stood for "potential of hydrogen" (or "power of hydrogen"), is used in chemistry to describe how acidic or basic an aqueous solution is. Lower pH values are summarized for acidic solutions (solutions with higher H+ ion concentrations) than for basic or alkaline solutions.

The pH scale is inversely indicates to the concentration of hydrogen ions in the solution and is logarithmic.

⇒pH = -log( $a_{H+}$ )

Acidic solutions are those with a pH below 7, and basic solutions are those with a pH above 7, at a temperature of 25 °C (77 °F). At this temperature, solutions with a pH of 7 are neutral (e.g. pure water). The pH neutrality relies on temperature, falling below 7 if the temperature rises above 25 °C.

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2 years ago

Two identical metal spheres at 8 °C are put into two beakers with equal amounts of water, as shown below.

leva [86]

Answer:

Correct answer is B.

Explanation:

Took the test and got this right. :)

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