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Buffers

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What substances act as a buffer?

Substances that act as buffers include bicarbonate ions in blood, phosphate ions in intracellular fluid, and proteins in cells and blood. Buffers help maintain a stable pH by absorbing excess hydrogen or hydroxide ions.


Can carbonic acid bind excess hydrogen ions to raise Ph?

Yes, carbonic acid can act as a buffer in the body by binding excess hydrogen ions to help regulate pH. It can form bicarbonate ions, which can then release hydrogen ions if pH levels become too high.


Proteins help regulate blood pH by?

To balance the body's pH levels you need to have the proper balance of acid-forming and alkaline-forming foods. All meats are acid-forming. You can balance them out with alkaline proteins such as yogurt, cheese, and some protein-rich vegetables.


What type of bond proteins have?

Protein molecules have covalent bonds in them, and there are hydrogen bonds that act as intermolecular bonds.


Why are hydrogen ions and hydroxide ions omitted from the net reaction for the hydrolysis of water?

Hydrogen ions and hydroxide ions are omitted from the net reaction for the hydrolysis of water because they act as both reactants and products in this reversible reaction. Including them would make the reaction appear overly complex. The net reaction focuses on the overall process of water breaking down into hydrogen and hydroxide ions.


What are the three mechanisms of hydrogen ion removal?

Hydrogen ion removal can occur through buffering, respiration (formation of water), and renal excretion (elimination through the kidneys). Buffers like bicarbonate act to combine with hydrogen ions to form a weak acid, which can be excreted. In respiration, hydrogen ions combine with oxygen to form water, reducing the concentration of hydrogen ions. The kidneys can eliminate excess hydrogen ions through urine to maintain acid-base balance.


What makes egg whites a good buffer?

Egg whites contain proteins that can act as buffers in solution by accepting or donating ions to help maintain a stable pH. The amino acids in egg whites, such as histidine, can pick up or release protons to resist changes in pH. This buffering capacity helps protect proteins and enzymes in food systems.


Why can ammonia molecule react with hydrogen ions but not hydrogen gas?

Ammonia can react with hydrogen ions due to its ability to act as a base and accept a proton from the hydrogen ion to form the ammonium ion. In contrast, ammonia cannot react with hydrogen gas because both molecules do not have a suitable functional group for a chemical reaction to occur between them.


Which is a substance act as a buffer in natural water?

Carbonate ions (CO3^2-) typically act as buffers in natural water bodies. These ions help maintain the water's pH level by absorbing excess hydrogen ions (H+), thus preventing drastic changes in acidity. Additionally, bicarbonate ions (HCO3-) and phosphate ions (PO4^3-) can also act as buffers in natural water systems.


What happens when sodium hydrogen carbonate solution is mixed with water?

When sodium hydrogen carbonate (baking soda) is dissolved in water, it dissociates to form sodium ions, bicarbonate ions, and some carbonate ions. This results in a slightly alkaline solution due to the presence of bicarbonate ions which can act as a buffer. The overall pH of the solution would be around 8.4.


How do hydrogen ions give acidic character to acids?

Hydrogen ions from acids dissociate in water to form hydronium ions (H3O+), increasing the concentration of hydronium ions in the solution. This high concentration of hydronium ions results in a low pH, giving acids their characteristic acidic properties. The hydronium ions also donate protons to other substances, allowing acids to act as proton donors in chemical reactions.


Is hydrogen basic or acidic?

Elemental hydrogen gas, H2, is neutral. Although hydrogen is the main factor in determining if a substance is a base or an acid; Acids have H+ ions and depending on how many there are determines th strength of them. Bases on the other hand base them selves around OH-(hydroxyl) ions and once again the more of these ions present the stronger the substance basicity is.