Solutions of equal concentration of the follo | vedclass

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(C) To determine the minimum $pH$,we look for the most acidic solution among the given options.$1$. $BaCl_2$ is a salt of a strong acid $(HCl)$ and a

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$NH_4Cl$

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(C) To determine the minimum $pH$,we look for the most acidic solution among the given options.$1$. $BaCl_2$ is a salt of a strong acid $(HCl)$ and a strong base $(Ba(OH)_2)$,so it is neutral $(pH \approx 7)$.$2$. $Na_2CO_3$ is a salt of a weak acid $(H_2CO_3)$ and a strong base $(NaOH)$,so it is basic $(pH > 7)$.$3$. $NH_4Cl$ is a salt of a strong acid $(HCl)$ and a weak base $(NH_4OH)$,so it is acidic $(pH $4$. $CH_3COONa$ is a salt of a weak acid $(CH_3COOH)$ and a strong base $(NaOH)$,so it is basic $(pH > 7)$.Comparing these,$NH_4Cl$ is the only acidic salt,thus it will have the minimum $pH$.

Solutions of equal concentration of the following substances are prepared separately. Which of these solutions will have the minimum $pH$?

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