_____ 16. Which of the following is a weak base?
A. NaOH B. Ca(OH)2 C. NH3 D. RbOH
Which is a weak base in aqueous solution? O NaOH O HF O NH3 Ca(OH)2
Which of the following is a weak base in aqueous solution? A. H2CO3 B. Al(OH)3 C. HBr D. LiOH E. Ca(OH)2
Classify NaOH as a strong base, weak base, strong acid, or weak acid. Then answer the following question. What is the pH of a 7.8 x 10-SM NaOH(aq) solution? a. 4.1 b. 9.5 C. 9.9 d. 4.5 e. 13.0
for the following concentrations, determine [OH-] for the strong bases and state the concentration that [OH-] must be less than for the weak babes a) 1.00M NaOH (aq) b) 4.5 M NH4OH (aq) c) 1.50 M RbOH (aq) d) 2.30 M Ca(OH)2 (aq)
8. Identify the following as a strong acid, a strong base, a weak acid, a weak base, or a neutral solution: a. LiBr b. LiOH c. H20 d. HNO3 e. HOBr f. CH3NH2 g. NH3 8. Identify the following as a strong acid, a strong base, a weak acid, a weak base, or a neutral solution: a. LiBr b. LiOH c. H20 d. HNO3 e. HOBr f. CH3NH2 g. NH3
35. Which of these is a weak base? A) NaOH C) NaCl B) HCI D) NH E) CH3CH2OH
Classify each of the following substances as either a strong or weak acid, strong or weak base, or a soluble or insoluble salt. Clear All HF Ca(OH)2 NH3 H2CO3 NaBr strong acid weak acid strong base weak base soluble salt insoluble salt
Which of the following 1.0 M solutions would have the lowest pH? Weak Base Weak Weink Ka Kb Acid HCN 4.9 x 10-10 HONH2 1.1 x 10-8 A) LINO3 HNO2 4.5 x 10-4 NH3 1.8 x 10-5 B) HONH3Br HIO 2.3 x 10-11 C6H5NH2 4.3 x 10-10 C) H2NNH3CIO4 HBrO 2.5 x 10-9 H2NNH2 1.3 x 10-6 D) Ca(Bro)2 CoH5COOH 6.3 x 10-5 C5H5N 1.7 x 10-9
8. Which one of the following substances is not a base? a) KOH b) Ca(ОН)2 c) NH3 d) HNO3 e) Cl 9. Which of the following species is NOT soluble? (a) Na2S (b) Рb(ОН)2 (c) KNO3 (d) KCl (e) (NH4)2CO3 10. Which of the following is a weak acid? a) HBr b) HCl c) NH3 d) HCIO4 e) HF
Which of the following is a strong base? a. NH3 b. NaOH c. MgO d. both b and c