Similarly, the muscles that maintain our posture contract and relax in a synchronized fashion. If the spasm is forceful and sustained, it becomes a cramp. A muscle cramp is an involuntarily and forcibly contracted muscle that does not relax. Muscle cramps cause a visible or palpable hardening of the involved muscle. Muscle cramps can last anywhere from a few seconds to a quarter of an hour or occasionally longer.
CH3COOH is the chemical formula for acetic acid (vinegar). It is also called ethanoic acid. It is considered to be a weak acid as it is only a partially dissociated acid in water.
CH3-CH2-CH2-COOH and CH3-CH2-CO-CH2-CH3 have roughly the same London forces and both contain a carbonyl group (C=O) so they both have a polar area. However, they differ because butanoic acid has an âOH bond so it has hydrogen bonding as an IMF.