Formic acid, HCHO2, is used to make methyl formate (a fumigant for dried fruit) and ethyl...
You combine 0.75 moles formate and 0.85 moles formic acid to make a buffer solution. The Ka of formic acid is 1.8xl0'4 what is the pH of the solution? With the same initial solution of 0.75 moles formate and 0.85 moles formic acid to make a buffer solution. The Ka of formic acid is 1.8xl0'4. You add 8g sodium hydroxide to this solution, what is the new pH? With the same initial solution of 0.75 moles formate and 0.85 moles...
!!!!!!!!!!!!! KaHCOOH formic acid: 1.7 x 10^-4 !!!!!!!!!!!!!!!! 6. (10 points) How many grams (g) of formic acid (HCHO2) would you need to make a 555mL solution with a pH of 2.25? Weah accu ossi
Suppose a buffer solution is made from formic acid, HCHO2, and sodium formate, NaCHO2. What is the net ionic equation for the reaction that occurs when a small amount of sodium hydroxide is added to the buffer? Select one: a. H3O+(aq) + OH–(aq) → 2H2O(l) b. OH–(aq) + HCHO2(aq) → CHO2–(aq) + H2O(l) c. NaOH(aq) + H3O+(aq) → Na+(aq) + 2H2O(l) d. NaOH(aq) + HCHO2(aq) → NaCHO2(aq) + H2O(l)
5. A buffer solution contains 10.0 mmol of formic acid (HCOOH) and 15.0 mmol of formate (HC00°). If the solution pH is 3.95, then what is the Ka of formic acid? (a) 7.5 x 10-5 (b) 1.1 x 104 (c) 4.1 x 10-2 (d) 1.7 x 104 6. At 298 K, the equilibrium constant for the below reaction is 4.17 x 10'. What is the concentration of Cl" at equilibrium? Pb2+ (aq) + 2 C1- (aq) = PbCl, (s) (a)...
How many grams (g) of formic acid (HCHO2) would you need to make a 555 mL solution with a pH of 2.25? Please show all steps
1. How many grams (g) of formic acid (HCHO2) would you need to make a 555 mL solution with a pH of 2.25? 2. Determine the pH of a 1.50 M sodium Cyanide (KCN) solution? -- be sure to show the 5% check! 3. At what pH will a 0.00201 M FeCl2 solution begin precipitating Fe(OH)2? Please show all the steps i am very confused!!
24. (25 points) A buffer solution was prepared by dissolving 0.500 mol formic acid and 0.060 mol sodium formate in enough water to make 1 L of solution, K, for formic acid is 1.80 x 104 a) Calculate the pH of the solution. b) If this solution was diluted to 10 times its volume, what would be the pH.
8. rs naturally in most ants. Soap solutions containing calcium hydroxide are used Formic acid occu to treat ant bites forming calcium formate. Given K of HC00H (formic acid) is 1.8 X 104 at room temperature, what answer is closest to the pH of the salt solution of 0.5 M calcium formate at room temperature? A) 2.02 B) 5.28 C) 8.72 D) 11.98 E) None of the them (A-D)
QUESTION 3 To make a buffer of formic acid (Ka = 1.8 x 10-4) with a pH = 4.00, what ratio of formic acid to sodium formate is required? (Notice that I am asking for the ratio of acid to base, not base to acid!) a) 1.25 b) 0.56 c) 0.82 d) 1.87 QUESTION 4 If you find that you need an acid to base ratio of 4.23 and you are using 50.00mL of a 1.00M acid solution, what volume...
Ethyl butyrate, CH3CH2CH2CO2CH2CH3, is an artificial fruit flavor commonly used in the food industry for such flavors as orange and pineapple. Its fragrance and taste are often associated with fresh orange juice, and thus it is most commonly used as orange flavoring. It can be produced by the reaction of butanoic acid with ethanol in the presence of an acid catalyst (H+): CH3CH2CH2CO2H(l)+CH2CH3OH(l)H+⟶CH3CH2CH2CO2CH2CH3(l)+H2O(l) Part A Given 7.75 g of butanoic acid and excess ethanol, how many grams of ethyl butyrate...