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Q1: Write 4 differences between Acids and Bases
Q2: What is pH value of seawater? Is it acidic, basic or neutral?
What is the pH of sugar?
Answers
Hey mate here's your answer
Acids have pH less than 7 but Bases have pH greater than 7. Acids react with metals to produce compound and hydrogen gas while bases do not react with metals . Acids are able to increase the H+ ions concentration in an aqueous solution whereas Bases are able to increase the OH- ions in an aqueous solution.
Sea water's typical pH, like most natural water, is alkaline or basic. Its range is given as 7.5 to 8.4.
Sugar is a pH-neutral substance, meaning that its pH value is usually more or less than 7, but close. However, raw and unprocessed sugar is slightly basic in nature, while white sugar and brown sugar are both slightly acidic.
Arrhenius Concept
Acid is the substance when dissolved in water, increases the concentration of H+ ions.
The base is the substance when dissolved in water, increase the concentration of OH- ions.
Bronsted-Lowry Concept
Acids are the proton donor
. Bases are the proton acceptor.
Lewis Concept
Such species that accepts the pair of electrons (an electrophile) and will have vacant orbitals are known as Lewis acid
. Such species that donates the pair of the electron (a nucleophile) and will have a lone pair of electrons are known as Lewis base.
Chemical formula
Such compound whose chemical formula begins with H, for example HCl (Hydrochloric acid), H3BO3 (Boric acid), CH2O3 (Carbonic
acid). Although CH3COOH (Acetic acid) is an exception.
Such compounds whose chemical formula ends with OH, for example KOH (Potassium hydroxide), NaOH (Sodium hydroxide).
pH scale (concentration of hydrogen ions in a solution) Less than 7. (in acids )
Greater than 7.(in base)
Physical Characteristics
Sour in taste. (acids)
Bitter in taste.(base)
ph value of seawater is basic
Sugar is a pH-neutral substance, meaning that its pH value is usually more or less than 7, but close. However, raw and unprocessed sugar is slightly basic in nature, while white sugar and brown sugar are both slightly acidic.
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