Chemistry, 18.02.2020 01:59 selenaK9514

Some of the following salts are used in detergents and other cleaning materials because they produce basic solutions. Which of the following could not be used for this purpose? Write equations to justify your answers.

a. Sodium carbonate
b. Sodium sulfate
c. Ammonium sulfate
d. Sodium phosphate

Answers: 2

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Answer from: cogger9348

Sodium sulfate and Ammonium sulfate could not be used for this purpose.

Explanation:

An acidic solution will show a pH in the range of 0 - 6.9. A basic solution show a pH in the range of 7.1 - 14. A neutral solution will show a pH of 7.

A salt is acidic, when it is formed from the combination of strong acid and weak base. A salt is basic, when it is formed from the combination of weak acid and strong base. A salt is neutral, when it is formed from the combination of weak acid and weak base or strong acid and strong base.

a. Sodium carbonate : is formed by the combination of strong base NaOH and a weak acid H_2CO_3[ , thus forms a basic solution.

$Na_2CO_3\rightarrow 2Na^++CO_3^{2-}$

b. Sodium sulfate: is formed by the combination of strong base NaOH and a strong acid H_2SO_4[ , thus forms a neutral solution.

$Na_2SO_4\rightarrow 2Na^++SO_4^{2-}$

c. Ammonium sulfate: is formed by the combination of weak base NH_4OH and a strong acid H_2SO_4[ , thus forms a acidic solution.

$(NH_4)_2SO_4\rightarrow 2NH_4^++SO_4^{2-}$

d. Sodium phosphate: is formed by the combination of strong base NaOH and a weak acid H_3PO_4[ , thus forms a basic solution.

$Na_3PO_4\rightarrow 3Na^++PO_4^{3-}$

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.

Answer from: Quest

2h2o2--> 2h2o + o2

this reaction is of the spontaneous decomposition of hydrogen peroxide down into water and oxygen.

add 2 molecules of hydrogen peroxide and 2 molecules of water. since oxygen is naturally diatomic, the total number of atoms of each element is now the same on both sides of the equation so it is balanced.

this may not be entirely correct but let me know.

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