An unknown salt is either NaF, KBr, NaCN, or NaOCL. When 0.050 mol of the salt...
An unknown salt is either NaF, KBr, NaCN, or NaOCL. When 0.050 mol of the salt is dissolved to form a 0.500 L solution, the pH of the solution is about 10.50. Identify which salt is most likely the unknown.
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An unknown salt is either NaF, KBr, NaCN, or NaOCL. When 0.050
mol of the salt...
Determine the pH of a buffer made by mixing 0.040 mol HF and 0.050 mol NaF...
REMOVED
Determine the pH of a buffer made by mixing 0.040 mol HF and 0.050 mol NaF into warm a 4.00-L solution. The Ka of HF at the warmed temperature is 8.5x104. Watch your SF!
An unknown monoprotic acid has a molar mass of 72.0 g/mol. When 9.30 g of the...
An unknown monoprotic acid has a molar mass of 72.0 g/mol. When 9.30 g of the acid is dissolved in 0.750 L of water, the pH of the solution is 3.850. What is the pKa of the unknown acid?
D Question 23 4 pts When a 0.100 mol of a pure compound is dissolved in...
D Question 23 4 pts When a 0.100 mol of a pure compound is dissolved in 1.0 L of water, the solution pH changes from 7.00 to 4.24. Which of the following is most likely the identity of the substance? A weak base A neutral salt A weak acid A strong base A strong acid Question 24 4 pts If the hydronium ion concentration, [H30*), in a solution is 5.6x10-10 M, what is the hydroxide ion concentration, [OH"), and the...
Which salt(s) listed below form(s) an acidic aqueous solution when dissolved in water? H2O I....
Which salt(s) listed below form(s) an acidic aqueous solution when dissolved in water? H2O I. KNO2 II. NaF III. NH4ClO4
Suppose you have an unknown clear, colorless solution. In attempt to identify it, you add NaOH dropwise...
Suppose you have an unknown clear, colorless solution. In attempt to identify it, you add NaOH dropwise and find that a white gelatinous precipitate forms, but when more NaOH was added the precipitate dissolved again. To another test tube of the same unknown solution is added AgNO3 dropwise, and a white precipitate forms. What salt most likely comprises the unknown solution? Explain your reasoning.
22. Which of the following salts generates the lowest pH (most acidic) when dissolved in water,...
22. Which of the following salts generates the lowest pH (most acidic) when dissolved in water, as a 1 mol L-? solution? A) B) Nicotine-HCl (pKb = 6.00) NaNO2 (pKb = 10.70) NaOOCH3 (pK6 = 9.24) NaF (pK6 = 10.80) Cocaine-HCl (pKb = 5.40) E)
Question 13 Which salt(s) listed below form(s) an acidic aqueous solution when dissolved in water? I....
Question 13 Which salt(s) listed below form(s) an acidic aqueous solution when dissolved in water? I. KNO2 NaF NH4CIO4 III. a. III only b. All of these O c II only d. I and II e I only
Suppose you have an unknown clear, colorless solution. In attempt to identify it, you add NaOH...
Suppose you have an unknown clear, colorless solution. In attempt to identify it, you add NaOH dropwise and find that a white gelatinous precipitate forms, but when more NaOH was added the precipitate dissolved again. To another test tube of the same unknown solution is added AgNO3 dropwise, and a white precipitate forms. What salt most likely comprises the unknown solution? Explain your reasoning (3 points) 2. Suppose you have a different unknown solution that you know to be 50/50...
Which salt(s) listed below form(s) an acidic aqueous solution when dissolved in water? I. II. III....
Which salt(s) listed below form(s) an acidic aqueous solution when dissolved in water? I. II. III. KNO2 NaF NH4C104 O a. III only All of these م O c. II only O d. I only Oe. I and II
21. Which of these oxides will produce a basic solution when dissolved in water? A) CO2...
21. Which of these oxides will produce a basic solution when dissolved in water? A) CO2 B) SO C) P205 D) Rb20 Ks = 2.0 x 10-5 22. Calculate the pH of a 0.021 M NaCN solution. [K, = 4.9 x 10-10 A) 1.68 B) 3.18 C) 5.49 D) 7.00 E) 10.82 23. Which response gives the products of hydrolysis of KF? A) KOH + HF B) OH + HF C) KOH + H+F D) KH+ + OH E) No...
REMOVED
Determine the pH of a buffer made by mixing 0.040 mol HF and 0.050 mol NaF into warm a 4.00-L solution. The Ka of HF at the warmed temperature is 8.5x104. Watch your SF!
D Question 23 4 pts When a 0.100 mol of a pure compound is dissolved in 1.0 L of water, the solution pH changes from 7.00 to 4.24. Which of the following is most likely the identity of the substance? A weak base A neutral salt A weak acid A strong base A strong acid Question 24 4 pts If the hydronium ion concentration, [H30*), in a solution is 5.6x10-10 M, what is the hydroxide ion concentration, [OH"), and the...
22. Which of the following salts generates the lowest pH (most acidic) when dissolved in water, as a 1 mol L-? solution? A) B) Nicotine-HCl (pKb = 6.00) NaNO2 (pKb = 10.70) NaOOCH3 (pK6 = 9.24) NaF (pK6 = 10.80) Cocaine-HCl (pKb = 5.40) E)
Question 13 Which salt(s) listed below form(s) an acidic aqueous solution when dissolved in water? I. KNO2 NaF NH4CIO4 III. a. III only b. All of these O c II only d. I and II e I only
Suppose you have an unknown clear, colorless solution. In attempt to identify it, you add NaOH dropwise and find that a white gelatinous precipitate forms, but when more NaOH was added the precipitate dissolved again. To another test tube of the same unknown solution is added AgNO3 dropwise, and a white precipitate forms. What salt most likely comprises the unknown solution? Explain your reasoning (3 points) 2. Suppose you have a different unknown solution that you know to be 50/50...
Which salt(s) listed below form(s) an acidic aqueous solution when dissolved in water? I. II. III. KNO2 NaF NH4C104 O a. III only All of these م O c. II only O d. I only Oe. I and II
21. Which of these oxides will produce a basic solution when dissolved in water? A) CO2 B) SO C) P205 D) Rb20 Ks = 2.0 x 10-5 22. Calculate the pH of a 0.021 M NaCN solution. [K, = 4.9 x 10-10 A) 1.68 B) 3.18 C) 5.49 D) 7.00 E) 10.82 23. Which response gives the products of hydrolysis of KF? A) KOH + HF B) OH + HF C) KOH + H+F D) KH+ + OH E) No...
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