Potassium bicarbonate (IUPAC name: potassium hydrogencarbonate, also known as potassium acid carbonate) is the inorganic compound with the chemical formula KHCO3. It is a white solid. Production and reactivity
It is manufactured by treating an aqueous solution of potassium carbonate with carbon dioxide:
K2CO3 + CO2 + H2O → 2 KHCO3Decomposition of the bicarbonate occurs between 100 and 120 °C (212 and 248 °F):

2 KHCO3 → K2CO3 + CO2 + H2OThis reaction is employed to prepare high purity potassium carbonate. Uses
Food and drink
This compound is a source of carbon dioxide for leavening in baking. It can substitute for baking soda (sodium bicarbonate) for those with a low-sodium diet, and it is an ingredient in low-sodium baking powders.As an inexpensive, nontoxic base, it is widely used in diverse application to regulate pH or as a reagent. Examples include as buffering agent in medications, an additive in winemaking. Potassium bicarbonate is often found added to club soda to improve taste, and to soften the effect of effervescence. Fire extinguishers
Potassium bicarbonate is used as a fire suppression agent ("BC dry chemical") in some dry chemical fire extinguishers, as the principal component of the Purple-K dry chemical, and in some applications of condensed aerosol fire suppression. It is the only dry chemical fire suppression agent recognized by the U.S. National Fire Protection Association for firefighting at airport crash rescue sites. It is about twice as effective in fire suppression as sodium bicarbonate.
It is often difficult to determine if the specific phobia of fear of flight should be the primary diagnosis, or if fear of flying is a symptom of a generalized anxiety disorder or another anxiety disorder such as agoraphobia or claustrophobia. Classification
Fear of flying is a specific phobia classified as such in the DSM-5. Management
Acute anxiety caused by flying can be treated with anti-anxiety medication. The condition can be treated with exposure therapy, including use of virtual reality equipment, which works better when combined with cognitive behavioral therapy. Relaxation techniques and education about aviation safety can also be helpful in combination with other approaches.A new and advanced treatment for aviophobia is virtual reality exposure therapy. This type of treatment uses computer technology where the patient enters a virtual reality of flying. Virtual reality exposure therapy
Effective treatment for phobias such as fear of flying would be one that activates and modifies the fear structure. Activation of the fear structure can be achieved by exposing the patient to the feared stimuli, flying in this case, to elicit the fearful response. Modification of the fear structure can be achieved by the processes of habituation and extinction after eliciting the fearful response several times. A new and advanced treatment for aviophobia is virtual reality exposure therapy (VRET). This type of treatment uses computer technology where the patient virtually experiences flying. This experience includes visual, auditory, and motion stimuli to imitate flying in a plane as close as possible. Thus, VRET is considered an effective treatment for aviophobia.