c. ..the volume of acid and base required to attain zen moments. d. ...the pH of
ID: 548694 • Letter: C
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c. ..the volume of acid and base required to attain zen moments. d. ...the pH of the strong acid. True or False: If the statement is FALSE, then please draw a line through a portion of the word or sentence and rewrite the statement so that becomes TRUE When a monoprotic acid, like HCI is titrated with a strong base in the presence of water, you will observe only one equivalency point. 3) TRUE FALSE 4) The first dissociation constant, Kai, for phosphoric acid, H3PO4, has a quantitative value of 7.5x10 3. This Kai value for phosphoric acid is considered a weak acid. TRUE FALSEExplanation / Answer
4.Higher The dissociation constant of an acid higher is the dissociation of the acid. Hence stronger is the acid. Ka>1 strong acid, Ka <1 weaker is the acid.
Hence in above statement the Ka value of phosphoric acid is less than 1 that means low hence the phosphoric acid is a weak acid. So the statement is true. (strong acids have Ka>1)
3. Let us take an example of HCl v/s NaOH(strong base) titration phenolphthalien is the indicator suitable. It has one equivalence point(theoretical end point of reaction which is invisible) and one end point (practical end point of the reaction which is visible) hence the above statement is true.
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