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Are buffers weak acids or bases that can react with strong acids or bases to prevent sudden changes in pH?
Wiki User
∙ 13y ago
A buffer solution contains both a weak acid and its conjugated weak base in a normal ratio between about 1 to 10 and 10 to 1.
So the buffer solution consist of weak acid and its salt or a weak base and its conjugated acid.
Wiki User
∙ 13y ago
Wiki User
∙ 14y agoA buffer solution minimises changes in pH despite the addition of moderate amounts of acid or alkali, and is made up of an acid and its conjugate base, where one of the pair is weak.
Let us look at an example to demonstrate how this works in practice:
Ethanoic acid/Sodium ethanoate buffer
In this buffer, we have ethanoic acid, or CH3COOH, which is a weak acid, and its conjugate base, which is sodium ethanoate.
Ethanoic acid can dissociate as seen below: (equilibrium)
CH3COOH --> CH3COO- + H+
Sodium ethanoate can dissociate as seen below: (equilibrium)
CH3COO-Na+ --> CH3COO- + Na+
When moderate amounts of acid are added to the buffer, there is a higher concentration of Hydrogen ions (the Brønsted-Lowry definition of an acid is a proton donor). These H+ ions react with CH3COO- provided by dissociation of sodium ethanoate to make CH3COOH.
When moderate amounts of a base is added, there is a high concentration of OH- ions (a base is a proton acceptor under the Brønsted-Lowry definition). These OH- ions will react with H+ ions formed from the dissociation of ethanoic acid, and as a result there is little change in the pH.
In answer to your question then, buffers do indeed react with moderate amounts of acid and base to prevent sudden changes in pH. However, remember that buffers consist of an acid and its conjugate base (where one of these is weak) - and not just a weak acid on its own.
Wiki User
∙ 13y agoThere are only a few common strong acids (HCl, HBr, HI, HClO3, HClO4, HNO3, H2SO4) and only one strong base (OH-) in water, all others are considered as WEAK.
Wiki User
∙ 13y agoI'm pretty sure it is. And correct me if I'm wrong, but I think it'd be true.
Wiki User
∙ 13y agoWiki User
∙ 11y agoActually that is the only way a buffer can be made!
Wiki User
∙ 13y agoStrong acids dissociate fully in water (that's essentially the definition of "strong acid") and hence cannot be used to make effective buffers.
Wiki User
∙ 7y agoAcids solutions have a pH under 7; bases solutions have a pH over 7. Buffers maintain the pH constant at a given value.
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True or false Buffers are weak acids or bases that can react with strong acids or bases to prevent sudden changes in pH?
Yes if u add 2 acids or bases or and acid and base together if both contain acids or bases it creates a poisounos gas that can kill or knock you out and will make pH higher. Dont try it though buy pH paper and use on ammonia ammonia is about a 11-12 on pH scale its very powerful. that was extra but yes it can cause sudden change matter what acids or bases you combine it with.
A sudden strong rush of wind or air is a?
gust
What indicates the possibility of dangerous weather conditions?
Dangerous weather conditions can be indicated by sudden visual changes in the clouds, a strong movement of wind or other sensations. Some people can even feel pain in arthritic joints as pressure changes occur.
What are 3 landforms created by sudden and gradual changes?
Sudden changes: Cracks in the Earth from earthquakes, lava plateaus from volcanic reactions, Gradual changes: mountains, coasts, river valleys, glacial valleys naja-stewart naja-stewart2
What is a sudden strong wind often with rain sleet or snow?
Squall
What are some examples of buffers?
Buffers are weak acids or bases that can react with strong acids or bases to prevent sharp, sudden changes in pH....
What are weak acids or bases that react with strong acids or bases to prevent sharp or sudden changes?
Buffers.
Is it true buffers are weak acids or bases that can react with strong acids or bases to prevent sudden changes in pH?
TURE
Weak acids or bases that prevent sudden changes in pH?
Buffers
What substance acts to prevent sudden pH changes in bodily fluid?
Buffer
What are the two major functions of loading buffer?
To prevent sudden changes in chemical compound and to stabilize
Is true of feedback?
Negative feedback mechanisms work to prevent sudden severe changes within the body.
What keeps blood pH relatively constant?
The level of pH (potential of Hydrogen) is very important for maintaining our lives and well-being. For example, the normal pH for our blood is between 7.35-7.45 (an average of 7.4), any deviation from this very small range could mean serious trouble. For this reason we emply buffer systems. Buffer is a substance that counteracts changes to the pH level. Examples for the buffer systems are: - Phosphate buffers - bicarbonate buffers - protein buffers (like haemoglobin). More informations can be found at related links.
What stops sudden changes in ph?
A buffer solution.
Are buffers weak acids that can react with the strong acids to prevent sudden changes in pH?
A buffer solution might be acidic, alkaline or even neutral. The only special feature of these solutions is the resistance of buffers to change their pH value. Let us consider the acetic buffer, which is acidic, and made out of acetic acid and sodium acetate. When little alkali is added, it would be neutralized by the protons from the acid and become to a new equilibrium to cancel the effect of alkali. When a little acid is added, the protons in the added acid along with the acetate ions in the buffer, would make acetic acid molecules and achieve a new equilibrium. This aspect can be easily understood by the Le Chatelier's Principle.
True or false Buffers are weak acids or bases that can react with strong acids or bases to prevent sudden changes in pH?
Yes if u add 2 acids or bases or and acid and base together if both contain acids or bases it creates a poisounos gas that can kill or knock you out and will make pH higher. Dont try it though buy pH paper and use on ammonia ammonia is about a 11-12 on pH scale its very powerful. that was extra but yes it can cause sudden change matter what acids or bases you combine it with.
A sentence that shows strong or sudden feelings?
It is called an exclamatory sentence.
