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How does limestone react when exposed to weak acids?
If the water contains any carbonic acid (if its rain water) then it will slowly dissolve/disintegrate the limestone.
Why the weak acid cannot be used as titrant?
If you are titrating a base, using a weak acid as titrant would lead to the formation of a buffer as you added the weak acid. The weak acid would react with the base to form the salt of the weak acid + water, and this would buffer any changes in pH, thus making the titration meaningless.
How so acid base buffer systems minimize pH changes?
Buffers contain both one weak acid and its coupled weak base, that can not react with each other (they are a so-called conjugated system). When you add strong acid it will react with the base part of this buffer, when strong base (hydroxide) is added it will react with the acid.
Does carbonic acid cause the dissolution of limestone?
Yes, carbonic acid dissolves limestone as does any other acid. As carbonic acid is not a very strong acid this process is very sluggish, though.
What reacts to baking soda?
Baking soda is a base so any acid will react to it. The most commonly known is the reaction between baking soda and vinegar.
A rock that reacts to acid is?
One is limestone, where the calcium carbonate will be dissolved by an aqueous acid solution. Marble can also be degraded, although more slowly, because it is composed of the metamorphic minerals calcite and dolomite.
Does schist rock bubble when with hydrochloric acid?
No, schist rock does not bubble when in contact with hydrochloric acid because schist is a metamorphic rock composed of minerals like mica, chlorite, and quartz that do not react with acids to produce gas bubbles. Schist is typically more resistant to chemical weathering compared to other rock types like limestone or marble.
Can a buffer be a mixture of a weak acid and it's conjugate base?
Mixtures of a weak acid and its conjugate base, such as HOAc and the OAc- ion, are called buffers. The term bufferusually means "to lessen or absorb shock." These solutions are buffers because they lessen or absorb the drastic change in pH that occurs when small amounts of acids or bases are added to water. Adding a single drop of 2 Mhydrochloric acid to 100 mL of pure water changes the pH from 7 to 3.
How does carbon dioxide cause chemical weathering?
Carbon dioxide in the atmosphere dissolves in rainwater to form a weak carbonic acid. This acid can react with minerals in rocks, such as limestone, to break them down through a process called carbonation. This chemical weathering process causes the rocks to erode and eventually form new minerals.
Is the meaning of weak acid as same of that of dilute acid?
No, the meaning of weak acid is not the same as dilute acid. A weak acid refers to an acid that only partially ionizes in solution, regardless of its concentration. On the other hand, a dilute acid refers to a solution that has a relatively low concentration of acid molecules compared to the solvent. A weak acid can be dilute or concentrated, depending on its concentration in solution.
Does tin react with citric acid?
Tin can not only react with citric acid, it can react with any acid.
Why can a buffer only buffer against a small amounts of acid or base?
A strong acid and a strong base will react together to produce a neutral salt. E.g., HCl (strong acid) and NaOH (strong base) will react together to form H20 and NaCl (salt). The salt is neutral (if you dump table salt into water, the solution will be neutral) this is because the Na+ and Cl- are perfectly happy being charged atoms. If you have something that doesn't really like to be ionized, which is a weak acid or base (for example acetic acid, (vinegar) which is only 1.1% ionized (charged) in a water solution) will only be ionized if something forces it to be ionized, i.e., a strong acid or base. When there is a mixture of a weak acid and its conjugate salt (or weak base and its conjugate salt) a buffer is formed. This is due to the fact that if you add some strong acid it will simply react with the conjugate salt, and if you add some strong base it will react with the weak acid. This is how they "buffer solutions" by keeping things pretty balanced. So to answer your question, a buffer must contain something that is only weakly reactive, and can react further when the need is present. A strong acid/base will totally react, so there is nothing left over to do any buffering.
