Multiple Choice
Which of the following mixtures gives a buffer with a pH greater than 7.0? For HCNO, Ka = 2.2 * 10-4 and for NH3,Kb = 1.8 * 10-5.
A) 10 mL of 0.1 M NH3(aq) + 10 mL of 0.1 M HCl(aq)
B) 10 mL of 0.1 M HCNO(aq) + 10 mL 0f 0.1 M NaOH(aq)
C) 10 mL of 0.1 M HCNO(aq) + 5.0 mL of 0.1 M NaOH(aq)
D) 10 mL of 0.1 M NH3(aq) + 10 ml of 0.1 M HCNO(aq)
E) 10 mL of 0.1 M NH3(aq) + 5.0 mL of 0.1 M HCl(aq)
Correct Answer:
Verified
Correct Answer:
Verified
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