Question

34.
a)
What pH do you expect for the following salt solutions and why?
NaCl, CuSO4 , and Na2CO;
b) Alcohol and glucose also contain hydrogen but do not conduct electricity. Why?
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Answer 1

Answer:

NaCl is a salt of strong acid (HCl) and a strong base (NaOH). Therefore, its solution is neutral with pH = 7 CuSO4 is a salt of strong acid (H2SO4) and weak base [CU(OH)2]. Therefore, its solution is acidic with pH < 7. Na2CO3 is a salt of strong base (NaOH) and weak acid (H2CO3). Therefore, its solution is basic with pH > 7.