According to Wikipedia, in chemistry, pH is a scale value to tell whether an aqueous solution is acidic or basic. The numbers range from 0 to 14. Like already mentioned, the lower the scale, it is acidic. Meanwhile, the higher the scale, it is basic or alkaline, and the seventh is ...
A rough indication of pH can be obtained using pH papers or indicators, which change color as the pH level varies. These indicators have limitations on their accuracy, and can be difficult to interpret correctly in colored or murky samples. WHAT DOES THE TERM "PH" MEAN? The term pH is de...
It is possible to have aqueous tear deficiency and tear instability at the same time, both of which contribute to dry eyes. When your eyes can't produce enough tears and also struggle to stabilise tears at the eye surface, the condition can become chronic. ...
The particles quickly swell and absorb water, urine, or other aqueous solutions. Polyacrylic acid is a polyelectrolyte which is soluble in aqueous media at neutral pH, due to the ionization of the pendent carboxyl side chains. Carbopols are polymers of acrylic acid that have been cross-linked ...
pH is aquantitative measure of the acidity or basicity of an aqueous solution. It refers to the negative logarithm of H+ion concentration. The term pH is derived from the German word "potenz" which means "power," and H is derived from the chemical symbol of hydrogen. So, pH stands for...
While many people feel effects after the first dose, it may take 3 to 4 days of regular use of Flonase nasal spray for the full effect on allergy symptoms. For this reason, nasal steroids like Flonase are most effective when used on a regular basis for long-term relief. Continue reading...
Why does a hydrate exist only as a solid? What characteristic of a hydrate is responsible for this phenomenon? How do chemical salts form? Define the term electrolyte cell. Why do ionic compounds conduct electricity in an aqueous solution or when molten, but do not conduct electri...
A dilute aqueous solution of ethylene glycol should be used instead if a product with a voltage more than 200V is to be manufactured. Although this solution has a high flash voltage and a good ability to suppress crystallization, ethylene glycol is difficult to boil. The film's loss will ...
What does the term strong acid mean? Strong electrolytes are also strong acids. Explain. The pH of a 0.129 M solution of a weak acid, HB, is 2.34. What is K_a for the weak acid? Which K value corresponds to the strongest weak acid? A) Ka = 2.5 x 10^-3 B) Ka = 8.5 x 10...
Describe the hazards of air pollution by sulfur(IV) oxide. What does available chlorine mean and why do manufacturers identify it on product labels? Explain how to prevent exposure to a carcinogen. Write a chemical profile for aqueous ammonia. Include hazard information. ...