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What is the name of a compound that stabilizes the pH of a solution by adding or taking hydrogen ions?

A compound that stabilizes the pH of a solution by adding or taking hydrogen ions is called a buffer. Buffers are composed of a weak acid and its conjugate base, or a weak base and its conjugate acid, and help maintain a constant pH by accepting or donating protons as needed.


What is one type of attractive force that stabilizes molecular solids?

One type of attractive force that stabilizes molecular solids is the van der Waals force. This force arises from temporary dipoles induced in molecules due to fluctuations in electron distribution, leading to weak intermolecular interactions that help hold the molecules together in the solid state.


How does the way a buffer stabilizes pH during addition of acid differ from the way the same buffer stabilizes pH during addition of base?

H+ and OH- ion responsible for acidic and basic behaviour are consumed by oppositely charged ions present in buffer solution to form a weak acid or base which is not much efficient to release H+ or oH- ion so pH does not change. But this happens only when strong acid or base is added to buffer in small amount.


What is the significance of aromaticity in tetraphenylporphyrin?

Aromaticity in tetraphenylporphyrin is significant because it stabilizes the molecule's structure, making it more rigid and planar. This stability is important for its role in various chemical reactions and biological processes, such as in the function of hemoglobin and chlorophyll.


What is the purpose of a choke in the lamps?

A choke in a lamp is used to regulate the flow of electrical current to the bulb, preventing excessive current from damaging the bulb and helping it operate efficiently. It also helps reduce flickering and stabilizes the light output.