Question

Decide whether the salts listed below should yield an acidic, basic, neutral or indeterminate pH when...

Decide whether the salts listed below should yield an acidic, basic, neutral or indeterminate pH when dissolved in deionized H20. Give chemical reactions to support your answer. ( NaCl, NaHCO3, NaC2H3O2, NH4C2H3O2 and NH4Cl)

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Answer #1

if salt formed from strong acid and strong base pH of that salt is 7

NaOH + HCl ----> NaCl

so NaCl is nuetral

NaHCO3 formed from

week carbonic acid and strong NaOH

H2CO3 (aq) + NaOH (aq) -----> NaHCO3

its pH is basic

NaC2H3O2 formed from

C2H4O2 + NaOH ----> NaC2H3O2

its week acid and strong base combination

so pH = basic.

C2H4O2 + NH3 -------> NH4C2H3O

its week base and week acid we cant find its pH

NH4Cl formed from

NH3 + HCl ----> NH4Cl

week base and stong acid

pH = acidic

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