SCIENCE
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Phosphoric acid is a weak acid that
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has a pH value of 1.0
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cannot neutralise alkaline solution
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changes red litmus paper to blue
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ionises partially in water to produce hydrogen ions
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Explanation:
Detailed explanation-1: -If an acid is weak, that means it will be partially ionised in an aqueous solution. Only some particles dissociate to release H+ ions, meaning this reaction is a reversible reaction. Weak acids are carbonic acid, citric acid and ethanoic acid.
Detailed explanation-2: -Phosphoric acid (H3PO4) is a colorless syrupy liquid. It is also known as orthophosphoric acid and its available analytical grade is 85%. In pure form phosphoric acid exists in the solid-state. As compared to HCl and H2SO4, phosphoric acid is a weak acid.
Detailed explanation-3: -An acid or base’s strength refers to its degree of ionization. A strong acid will completely ionize in water while a weak acid will only partially ionize.
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