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A solution contains 6.30 times 10^-2 g of oxalic acid, H_2 C_2 O_4. 2 H_2 O,...
You titrated a 22.00 mL solution of 0.0300 M oxalic acid with freshly prepared solution of...
You titrated a 22.00 mL solution of 0.0300 M oxalic acid with
freshly prepared solution of KMnO4. If it took 48.99 mL of this
solution, what is the molarity of the KMnO4?
0.022 L of 0.300 M oxalic acid
(0.022)(0.03) = 0.00066 mol oxalic acid
0.0006 mol oxalic acid x (2 mol KMnO4)/(5 mol oxalic acid)=
0.000264 mol KMnO4
0.000264 mol/0.04899 L = 0.05388855 M KMnO4
= 0.005388 M KMnO4
where did I go wrong?
Question 7 0.1 / 1...
Consider the combustion of ethylene. C_2 H_4 (g) + 3O_2 (g) rightarrow 2CO_2 (g) + 2H_2...
Consider the combustion of ethylene. C_2 H_4 (g) + 3O_2 (g) rightarrow 2CO_2 (g) + 2H_2 O (g) If the concentration of C_2 H_4 is decreasing at the rate of 3.7 times 10^-3 M/s, what is the rate of change in the concentration of CO_2 ? Express the rate in molarity per second two significant digits. delta [CO_2]/delta t = M/s What is the rate of change in the concentration of H_2 O ? Express the rate in molarity per...
A solution is prepared by dissolving 0.5892 g oxalic acid (H2C2O4) in enough water to make...
A solution is prepared by dissolving 0.5892 g oxalic acid (H2C2O4) in enough water to make 100.0 mL of solution. A 10.00-mL aliquot (portion) of this solution is then diluted to a final volume of 250.0 mL. What is the final molarity of the diluted oxalic acid solution? I do not know if the answer of 0.00187 or 1.87 x 10^ -3 is correct. It is incorrect in my perspective, so i do not expect that answer, if you think...
A strono mie to Lithiusirgo month of ombat obrobnog od nanono o 6. A solution contains...
A strono mie to Lithiusirgo month of ombat obrobnog od nanono o 6. A solution contains 6.30x10 2g of oxalic acid, H,C,04.2H20, in 250 mL. What is the molarity of this solution?
Data Table 1 Mass of flask and oxalic acid (g) 117.43 Mass of empty flask (g)...
Data Table 1 Mass of flask and oxalic acid (g) 117.43 Mass of empty flask (g) 116.93 Mass of oxalic acid (g) 0.5 Moles of oxalic acid (mol) Final volume of NaOH (mL) 17 Initial volume of NaOH (mL) 5 Volume of NaOH used (mL) 12 Moles of NaOH (mol) Molarity of NaOH (M) Data Table 2 Mass of flask and vinegar (g) 126.61 Mass of empty flask (g) 121.63 Mass of vinegar (g) 4.98 Final volume of NaOH (mL)...
For the diprotic weak acid H_2 A, K_a1 = 3.4 times 10^-6 and, K_a2 = 5.7...
For the diprotic weak acid H_2 A, K_a1 = 3.4 times 10^-6 and, K_a2 = 5.7 times 10^-9. What is the pH of a 0.0800 M solution H_2 A? What are the equilibrium concentrations of H_2 A and A^2- in this solution? pH = [H_2 A] = [A^2-] =
3. A potassium hydroxide solution was standardized against the solid acid, oxalic acid dihydrate. The volume...
3. A potassium hydroxide solution was standardized against the solid acid, oxalic acid dihydrate. The volume of the potassium hydroxide solution required to neutralize 0.317 grams of oxalic acid dihydrate was 48.82 milliliters. Calculate the molarity of potassium hydroxide solution. 4. The molarity of phosphoric acid in a popular cola is to be determined. A 355 mL sample of the cola is O 103 M potassium hydroxide solution. Calculate the molarity of phosphoric acid in the cola.
The reaction 2 H_2 O_2(aq) right arrow 2 H_2 O(I) + O_2 (g) is first order...
The reaction 2 H_2 O_2(aq) right arrow 2 H_2 O(I) + O_2 (g) is first order in H_2 O_2 and has a rate constant of 0.00790 s^-1 at 20 degree C. A reaction vassel initially contains 159 mL of 26% H_2 O_2 by mass solution (the density of the solution is 1.17 g/mL). The gaseous oxygen is collected over water at 20 degree C as it forms. What volume of O_2 forms in 86 seconds at a barometric pressure of...
Trial one Trial two Trial three Volume of oxalic acid (mL) 10.1 mL 10.2 mL 10.1...
Trial one Trial two Trial three Volume of oxalic acid (mL) 10.1 mL 10.2 mL 10.1 mL Moles of oxalic acid (moles) Initial volume of NaOH (mL) 18.7 mL 26.5 mL 34.6 mL Final volume of NaOH (mL) 26.5 mL 34.6 mL 42.6 mL Delivered volume of NaOH (moles) 7.8 mL 8.1 mL 8 mL Moles of NaOH (moles) Molarity of NaOH (M) Average Molarity NaOH (M) Concentration of oxalic acid (M) = 0.2567 Trial one Trial two Trial three...
Calculate the mass of oxalic acid needed to make a 250.0 mL standard solution that is...
Calculate the mass of oxalic acid needed to make a 250.0 mL standard solution that is 0.0500 mol L-1 . You will use oxalic acid dihydrate, (COOH)2.2H2O. M((COOH)2.2H2O) = 126.07 g mol-1 )
You titrated a 22.00 mL solution of 0.0300 M oxalic acid with
freshly prepared solution of KMnO4. If it took 48.99 mL of this
solution, what is the molarity of the KMnO4?
0.022 L of 0.300 M oxalic acid
(0.022)(0.03) = 0.00066 mol oxalic acid
0.0006 mol oxalic acid x (2 mol KMnO4)/(5 mol oxalic acid)=
0.000264 mol KMnO4
0.000264 mol/0.04899 L = 0.05388855 M KMnO4
= 0.005388 M KMnO4
where did I go wrong?
Question 7 0.1 / 1...
Consider the combustion of ethylene. C_2 H_4 (g) + 3O_2 (g) rightarrow 2CO_2 (g) + 2H_2 O (g) If the concentration of C_2 H_4 is decreasing at the rate of 3.7 times 10^-3 M/s, what is the rate of change in the concentration of CO_2 ? Express the rate in molarity per second two significant digits. delta [CO_2]/delta t = M/s What is the rate of change in the concentration of H_2 O ? Express the rate in molarity per...
A strono mie to Lithiusirgo month of ombat obrobnog od nanono o 6. A solution contains 6.30x10 2g of oxalic acid, H,C,04.2H20, in 250 mL. What is the molarity of this solution?
For the diprotic weak acid H_2 A, K_a1 = 3.4 times 10^-6 and, K_a2 = 5.7 times 10^-9. What is the pH of a 0.0800 M solution H_2 A? What are the equilibrium concentrations of H_2 A and A^2- in this solution? pH = [H_2 A] = [A^2-] =
3. A potassium hydroxide solution was standardized against the solid acid, oxalic acid dihydrate. The volume of the potassium hydroxide solution required to neutralize 0.317 grams of oxalic acid dihydrate was 48.82 milliliters. Calculate the molarity of potassium hydroxide solution. 4. The molarity of phosphoric acid in a popular cola is to be determined. A 355 mL sample of the cola is O 103 M potassium hydroxide solution. Calculate the molarity of phosphoric acid in the cola.
The reaction 2 H_2 O_2(aq) right arrow 2 H_2 O(I) + O_2 (g) is first order in H_2 O_2 and has a rate constant of 0.00790 s^-1 at 20 degree C. A reaction vassel initially contains 159 mL of 26% H_2 O_2 by mass solution (the density of the solution is 1.17 g/mL). The gaseous oxygen is collected over water at 20 degree C as it forms. What volume of O_2 forms in 86 seconds at a barometric pressure of...
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