When potassium nitrite, KNO2 is dissolved in water, the pH is basic. This is because the...
When potassium nitrite, KNO2 is dissolved in water, the pH is basic. This is because the nitrite ion, NO2- is a weak base with a Kb of 1.4 x 10-11. a. Write an appropriate acid/base reaction for the nitrite ion in water. a. Write the equilibrium constant expression for Kb. b. Calculate the pH of a 0.650 M solution of potassium nitrite in H2O.
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When potassium nitrite, KNO2 is dissolved in water, the pH is
basic. This is because the...
A solution is made by dissolving 24 g of potassium nitrite, KNO2, in enough water to...
A solution is made by dissolving 24 g of potassium nitrite, KNO2, in enough water to make exactly 100. mL of solution. Calculate the molarity of each species: KNO2 K+ NO2-
What is the pH of a 0.15 M solution of potassium nitrite (KNO2)? (K, value for...
What is the pH of a 0.15 M solution of potassium nitrite (KNO2)? (K, value for HNO2 nitrous acid - 4.0 x 10-4) a. 11.43 d.5.71 b. 7.00 e. 11.89 c. 8.29 - -
Indicate whether each of the following compounds will give an acidic, basic or neutral solution when dissolved i...
Indicate whether each of the following compounds will give an acidic, basic or neutral solution when dissolved in water. Clear All ammonium chloride The pH will be less than calcium nitrite The pH will be approximately equal to 7 potassium nitrate The pH will be greater than 7 ammonium nitrate For the following reaction, the reactants are favored at equilibrium. Classify each of the reactants and products based on their strength as Bronsted-Lowry acids or bases. CIO+CHINHCH N + HCIO...
23/24/25 Write the K, expression for an aqueous solution of hypochlorous acid: (Note that either the...
23/24/25
Write the K, expression for an aqueous solution of hypochlorous acid: (Note that either the numerator or denominator may contain more than one chemical species. Enter the complete numerator in the top box and the complete denominator in the bottom box. Remember to write the hydronium ion out as H2O+, and not as H) rap Write the K expression for an aqueous solution of hydrocyanic acid: (Note that either the numerator or denominator may contain more than one chemical...
1.) 4.00 g of NaOH are dissolved in water to make 5.00 L of solution. What...
1.) 4.00 g of NaOH are dissolved in water to make 5.00 L of solution. What is the concentration of hydronium ions, [H3O+], in this solution? Express your answer with the appropriate units. 2.) If you wanted to determine how much KOH (potassium hydroxide; a strong base) was dissolved in water, you could titrate it with a known amount of KHP (potassium hydrogen phthalate; a weak acid) until a color change indicates that the base is completely neutralized. The molecular...
1. A certain amount if nitrous acid is dissolved in water at 25 celcius. At equilibrium,...
1. A certain amount if nitrous acid is dissolved in water at 25 celcius. At equilibrium, the pH of the solution is 2.33. What is the concentration of H3O+ and NO2-? 2. Calculate the valye if the equilibriym constant at 25 celcisus for the reaction: HNO2+OH- -> H2O + NO2-
please help >< Polyprotic acids have more than one proton to donate to water, therefore have...
please help ><
Polyprotic acids have more than one proton to donate to water, therefore have more than one equilibrium constant for proton donation. For phosphoric acid, there is a three-step equilibrium: H, PO +H,0 5 H2PO4 + H30* H,PO," +H,0 5 HPO - +H30* HPO 2- +,0 5 PO.- +,0* Kai = 7.11 x 10-3 Ka2 = 6.32 x 10-8 Ka; = 4.5 x 10-13 For all conjugate acid base pairs: K, XKK where K is for the reaction...
10. (a) Determine the pH of 0.10 M lactic acid (HC3H5O3) (b) What is the pH...
10. (a) Determine the pH of 0.10 M lactic acid (HC3H5O3) (b) What is the pH of a buffer that is 0.12 M lactic acid and 0.10 M sodium lactate (NaC2H5O3)? For lactic acid. Ka - 1.4 x 104. (10) 11. Hydrazine, N2H4, is a weak base. Write the equation for the reaction of hydrazine with water and write the expression for Kb. (5) Na Hj
solution. 5. (3pts) When NHI dissolves in water it will produce a A. Acidic B. Basic...
solution. 5. (3pts) When NHI dissolves in water it will produce a A. Acidic B. Basic C. Neutral 6. (3pts) When NH F, which is the salt of a weak acid and a weak base, dissolves in water it will produce solution. (K. of NH4 is 5.6 x 100 and Kb of F is 1.4 x 10-11) A. Acidic B. Basic C. Neutral
10. For an aqueous solution labeled "0.10 M potassium bromide," A) the pH is greater than...
10. For an aqueous solution labeled "0.10 M potassium bromide," A) the pH is greater than 7. B) the pH = 13. D) the pH is less than 7. E) the pH = 7. C) the pH = 1. 11. For a 0.10 M solution of a weak acid, HA, with pKa = 6, which of the following is true? A) [HA] =[A-] B) [HA] does not equal [H3O+] C) [HA] =[H3O] D) [HA] = K E) [HA] = 0...
What is the pH of a 0.15 M solution of potassium nitrite (KNO2)? (K, value for HNO2 nitrous acid - 4.0 x 10-4) a. 11.43 d.5.71 b. 7.00 e. 11.89 c. 8.29 - -
Indicate whether each of the following compounds will give an acidic, basic or neutral solution when dissolved in water. Clear All ammonium chloride The pH will be less than calcium nitrite The pH will be approximately equal to 7 potassium nitrate The pH will be greater than 7 ammonium nitrate For the following reaction, the reactants are favored at equilibrium. Classify each of the reactants and products based on their strength as Bronsted-Lowry acids or bases. CIO+CHINHCH N + HCIO...
23/24/25
Write the K, expression for an aqueous solution of hypochlorous acid: (Note that either the numerator or denominator may contain more than one chemical species. Enter the complete numerator in the top box and the complete denominator in the bottom box. Remember to write the hydronium ion out as H2O+, and not as H) rap Write the K expression for an aqueous solution of hydrocyanic acid: (Note that either the numerator or denominator may contain more than one chemical...
please help ><
Polyprotic acids have more than one proton to donate to water, therefore have more than one equilibrium constant for proton donation. For phosphoric acid, there is a three-step equilibrium: H, PO +H,0 5 H2PO4 + H30* H,PO," +H,0 5 HPO - +H30* HPO 2- +,0 5 PO.- +,0* Kai = 7.11 x 10-3 Ka2 = 6.32 x 10-8 Ka; = 4.5 x 10-13 For all conjugate acid base pairs: K, XKK where K is for the reaction...
10. (a) Determine the pH of 0.10 M lactic acid (HC3H5O3) (b) What is the pH of a buffer that is 0.12 M lactic acid and 0.10 M sodium lactate (NaC2H5O3)? For lactic acid. Ka - 1.4 x 104. (10) 11. Hydrazine, N2H4, is a weak base. Write the equation for the reaction of hydrazine with water and write the expression for Kb. (5) Na Hj
solution. 5. (3pts) When NHI dissolves in water it will produce a A. Acidic B. Basic C. Neutral 6. (3pts) When NH F, which is the salt of a weak acid and a weak base, dissolves in water it will produce solution. (K. of NH4 is 5.6 x 100 and Kb of F is 1.4 x 10-11) A. Acidic B. Basic C. Neutral
10. For an aqueous solution labeled "0.10 M potassium bromide," A) the pH is greater than 7. B) the pH = 13. D) the pH is less than 7. E) the pH = 7. C) the pH = 1. 11. For a 0.10 M solution of a weak acid, HA, with pKa = 6, which of the following is true? A) [HA] =[A-] B) [HA] does not equal [H3O+] C) [HA] =[H3O] D) [HA] = K E) [HA] = 0...
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