Lactic acid has one acidic hydrogen. A 0.10M solution of lactic acid has a pH of 2.44. Calculate Ka.?
Lactic acid = HC3H5O3 = HA HA <-- --> H+ + A- 0.10_____0____0_at start 0.10-X___X____X_at end whit X = [H+] = 10^-2.44 then Ka = 10^-2.44*10^-2.44 / (0.10-10^-2.44) = = 1.37*10^-4
Why is lactic acid formed even when an athlete is breathing oxygen?
Lactic acid fermentation, as you probably know, is the product of anaerobic respiration in the muscles and other parts of the body. This typically occurs during exercise. Now, as you've implied, it is probably true that people don't stop breathing so there is oxygen entering the body but not enough to sustain intense exercise. Anaerobic respiration and lactic acid fermentation is a fast and efficient way of getting energy to the muscles, even if the consequence is lactic acid build up and a lower amount of ATP. If the muscles and other parts of the body need the energy fast, lactic acid fermentation is the key. This is a really great website which talks about lactic acid, the good and the bad: http://www.delano.k12.mn.us/sitepages/pi...
How to avoid a lactic acid build up during running and dancing?
Where lactic acid comes from Lactic acid is produced as a result of hard work by the muscles. What happens is that when your body is working hard, it produces high levels of lactate in the muscles. When you’re running or sprinting, your body produces so much lactate that it can’t remove it from the muscles quickly enough. However, while this sounds like a bad thing, it’s actually a sign that your body is finding ways to create energy and ensure that you can keep doing whatever it is that you’re doing. However, when the lactate levels get too high, a chemical reaction occurs with other chemicals in the body, creating lactic acid. What you should know is that it is not the rise in lactate levels that leads to that burning feeling in your muscles, but rather it seems that it is the reaction that forms lactic acid that is the cause of the pain. But some scientists are still debating about the pain’s source. How to overcome lactic acid But what you really want to know is how you can avoid that burning pain when you are working out. And the answer is simple: work out more. While it might seem counterproductive to workout more, what you need to do is effectively ‘teach’ your muscles to handle lactic acid in a more effective way. However, you want to do this is a controlled fashion so that you’re not hurting each time you walk in the door. You can start to build up a resistance to lactic acid by working out at a medium intensity during your workouts. This means that you are working just hard enough to get your heart pumping fast and your lungs working a little harder. You might measure this by how much you can talk as you are working out – which should be in incomplete sentences, though you can still talk. As you build up your muscular and aerobic capacity, your body will be able to handle higher levels of lactic acid and thus reduce the amount of pain that you might feel. Learn how to control lactic acid You don’t necessarily have to feel the burn in order to have a good workout; you can learn how to control the lactic acid effect in your body and maximize your workout time. Read more about Lactic Acid - How to Prevent Lactic Acid by 24 Hr Fitness
How can you get rid of lactic acid in your muscles quicker?
You can’t totally get rid of lactic acid and you really DON”T want to for a number of reasons, but you can reduce it by doing these 2 methods.If you are experiencing lactic acid during your workouts, congratulations.Before I answer your question here’s why lactic acid is so important during exercise.Lactic acid is what I consider to be the ‘magical hormone.’Lactic acid unleashes your body’s natural ability to break down muscle tissue and grow it back bigger... fuller... leaner... stronger…One of the BIGGEST and BEST workouts to create the most amount of lactic acid is barbell and dumbbell complexes.Scientists took “dead” human muscle tissue and placed a drop of this chemical onto the muscle which began to swell in size and come back to life.Lactic acid forces your body to release floods of testosterone which swell your muscles in size... strengthening your muscles with human growth hormones. As well you bolster your dopamine and serotonin levels.Special cells called “Leydig” use lactic acid to suck up cholesterol and convert it into testosterone.In turn this lowers your free cholesterol count and releases human growth hormone which in turn raids your fat cells for emergency fuel to strip away fat from trouble spot areas like your belly.When lactate triggers in your muscles... You will feel that intense “burn” and the more lactic acid you coax from your muscles... the more powerful the benefits.What you an do to reduce lactic acid after exercise is 2 things:Consume 20 grams of BCAA’s (Branch Chain Amino Acids) and 20 more grams after the workout.Take a shower alternating between cold and warm water to flush out lactic acid
How many grams of lactic acid (C3H603), are in 1 liter of a 0.5 M solution of lactic acid? (12C, 1H,16O)?
MW of Lactic Acid = ((12X12) + (1X1) + (16X16)) = 401 g/mol If the molarity is 0.5, there are 0.5 moles in the 1 liter of solution. 0.5 X (MW of Lactic Acid) = 200.5 grams of lactic acid. If you account for significant figures, the answer would be 2 X 10^2 grams. The number of molecules would be equal to 0.5 moles X 6.022 X 10^23 (Avogadro's number). = 3.011 X 10^23 molecules
Why does the human body produce lactic acid? What's the purpose?
im not positive. but, lactic acid is a bi-product of anaerobic respiration. and is what makes your muscles ache after exercise if you dont cool down properly. it can also cause cramps in your muscles.However, it quickens the metabolism of the body and acts as a useful energy source. hope this helped :)
What are the fastest ways to clear lactic acid?
Move the muscles gently and keep your breathing pattern after exercise. (5-10 mins should be OK.)In the veins, the blood pressure is lower than that in the arteries. The contraction of skeletal muscles exerts forces to push the blood to return to the heart faster and thus improve blood circulation so that a. the skeletal muscle cells will have higher oxygen supply, andb. the lactic acid would be removed from the area faster as it keeps the lactic acid concentration gradient steep. *Lactic acid (lactate) would diffuse to the blood (lower lactic acid concentration) from the muscles (higher lactic acid concentration). To "clear" lactic acid, the lactic acid will be1. oxidized back to pyruvate by well-oxygenated muscle cells, or2. converted to glucose in the liver and released back to the blood.Contraction causes a. & b. where a. helps 1., and both a. & b. helps 2.
How does oxygen remove lactic acid after vigorous exercise?
As lactic acid accumulates in the muscle cells, it diffuses out of the muscles into the bloodstream. The bloodstream carries it to the liver. In the liver, lactic acid is converted back into glucose, essentially by backing up the reactions of glycolysis. There are 2 steps in glycolysis that require ATP. These are the same 2 steps that generate ATP during forward glycolysis. Extra oxygen is required to generate this extra ATP that is required to convert lactic acid back into glucose.
Does lactic acid ever build up in the heart?
There are several differences between heart muscle and the skeletal muscles of the body that mean that heart muscle should never build up lactic acid and feel fatigued. The reason for this is that the heart has to beat continuously for sometimes 100 years or more without a rest. When a muscle works anaerobically and builds up an oxygen debt it needs time to rest to recover but the heart is unable to do this.The heart has the best supply of oxygen rich blood of any organ in the body. But the heart does not get its oxygen from the blood as it enters and leaves the heart during the beating cycle. The heart has its own circulation provided by the coronary arteries and veins. The coronary arteries start as a branch from the aorta, the main artery leaving the left side of the heart. Therefore, the heart has a plentiful supply of oxygen rich blood. The second main difference is in the number of mitochondria in the muscle. Glycolysis, the anaerobic stage of respiration, takes place in the cytoplasm of the cell, requires no oxygen (hence anaerobic), and produces small quantities of ATP. To generate more ATP the products from glycolysis move into the mitochondria and in the presence of oxygen are broken down to produce many molecules of ATP. Some skeletal muscles, especially very fast muscle, have very few or no mitochondria so all there respiration is anaerobic as this is the most efficient way to get fast short bursts of work from the muscle. The heart has lots of oxygen and lots of mitochondria so is able to continue working away day after day without building up an oxygen debt.There is just one exception.. A 'heart attack' is caused by one or more of the arteries supplying the heart with oxygenated blood becoming blocked. Therefore, a region of the heart will not receive a plentiful supply of oxygen and so this region will start to produce lactic acid. This situation cannot be sustained for a long time, it can cause severe damage to the tissue that is not receiving sufficient oxygen, and this is what causes the pain. This demonstrates how important it is that cardiac muscle does not generate lactic acid under physiological conditions.http://www.madsci.org/