0
Add your answer:
Earn +20 pts
What are substances that remove H from a solution?
Substances that remove H+ ions from a solution are called bases or alkalis. Bases react with H+ ions to form water, reducing the concentration of H+ ions in the solution. Examples of bases include sodium hydroxide (NaOH) and ammonia (NH3).
Are acids and alkalis the same?
No, acids and alkalis are not the same. Acids are compounds that release hydrogen ions when dissolved in water, whereas alkalis are compounds that release hydroxide ions when dissolved in water. Acids have a pH less than 7, while alkalis have a pH greater than 7.
What is the solution called when it has no ions?
A solution without ions is called a nonionic solution. This means that the solute molecules in the solution do not dissociate into charged particles like ions.
A base donates what ions into solution?
A base donates hydroxide ions (OH-) into solution.
Magnesium ribbon is put into blue copper sulphate solution the solution becomes colourless and a pinkish metal is produced?
When magnesium ribbon is put into a blue copper sulphate solution, a single displacement reaction occurs. The magnesium displaces the copper ions, forming magnesium sulfate and elemental copper. The blue color of the solution fades because copper ions are removed and the pinkish metal produced is the elemental copper that settles at the bottom of the container.
Do alkalis produce OH- ions in solution?
Yes, alkalis produce hydroxide ions (OH-) in solution. Alkalis are soluble bases that dissociate in water to release hydroxide ions, which are responsible for their alkaline properties.
What ions are present in alkalis?
The main ions present in alkalis are hydroxide ions (OH-) and cations such as sodium (Na+), potassium (K+), or calcium (Ca2+). These ions are responsible for giving alkalis their alkaline properties.
What kind of ions are produced in a solution containing an acids?
In a solution containing an acid, hydrogen ions (H+) are produced. These ions are responsible for the acidic properties of the solution.
What is an aqueous solution of a base called?
An aqueous solution of a base is called an alkali solution. Alkalis are compounds that release hydroxide (OH-) ions in water, leading to an increase in the concentration of hydroxide ions in the solution. This results in a solution with a pH greater than 7.
What Ion is always present in Alkali's?
The hydroxide ion (OH-) is always present in alkalis. Alkalis are chemical compounds that produce hydroxide ions in solution and have a pH greater than 7.
What are substances that remove H from a solution?
Substances that remove H+ ions from a solution are called bases or alkalis. Bases react with H+ ions to form water, reducing the concentration of H+ ions in the solution. Examples of bases include sodium hydroxide (NaOH) and ammonia (NH3).
What ions is present in alkalis?
Hydroxide
What is a compound that produced hydroxide ions in a solution?
The compound is a base.
Why are alkalis the opposite of acids?
Alkalis are substances that produce hydroxide ions (OH-) in solution, while acids produce hydrogen ions (H+). When an acid reacts with an alkali, they neutralize each other forming water and a salt, which is why they are considered opposites in terms of their chemical properties. Acids have a pH below 7, while alkalis have a pH above 7 on the pH scale.
Who was the first scientist to suggest grouping substances into acids and alkalis?
The first scientist to suggest grouping substances into acids and alkalis was the Swedish chemist Svante Arrhenius in the late 19th century. He proposed that acids release hydrogen ions in solution, while alkalis release hydroxide ions. This laid the foundation for modern acid-base theories.
What are the differences between bases and alkali in chemistry?
Bases are substances that can accept protons according to the Brønsted-Lowry definition, while alkalis are bases that are soluble in water. Essentially, all alkalis are bases, but not all bases are alkalis. Alkalis typically release hydroxide ions in solution, while bases may or may not release hydroxide ions depending on their solubility in water.
Does alkali dissolve in water?
Alkalis (bases) typically dissolve in water to form alkaline solutions. This process involves the alkali ions dissociating in water to produce hydroxide ions, which increase the pH of the solution. Examples of alkalis that dissolve in water include sodium hydroxide (NaOH) and potassium hydroxide (KOH).
