a. If a titration of a sample of HCl dissolved in water required 33.56 mL of...
a. If a titration of a sample of HCl dissolved in water required 33.56 mL of 0.0358 M NaOH, how many moles of HCl were in the sample?
b. What is the molarity of a solution that results from dissolving 0.895 g of Na2CO3 in 50 mL of water, then diluting the mixture by a factor of 1:25?
Homework Answers
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a. If a titration of a sample of HCl dissolved in water required
33.56 mL of...
4.00 g Na2CO3 is dissolved in H2O and titrated with HCl. 48.0 mL of a HCl...
4.00 g Na2CO3 is dissolved in H2O and titrated with HCl. 48.0 mL of a HCl solution were required to titrate the Na2CO3 solution. What is molarity of HCl solution? Na2CO3(aq) + 2HCl(aq) --> 2NaCl(aq) + H2O(l) + CO2(g)
9. What is the hydroxide-ion concentration in a solution formed by combining 200 mL of 0.16 M HCl with 300. mL of 0...
9. What is the hydroxide-ion concentration in a solution formed by combining 200 mL of 0.16 M HCl with 300. mL of 0.091 M NaOH at 25°C? HCl(aq) + NaOH(aq) + NaCl(aq) + H2O(1) 10. What is the pH of a solution prepared by dissolving 0.241 L of HCl(g), measured at STP, in enough water such that the total volume of the solution is 2.00 L? (R = 0.0821 L.atm/(K.mol)) (Use gas law equation to calculate Mole of HCl dissolved...
A titration of 25.00 mL of O.1550 M HCl solution with a solution of NaOH of...
A titration of 25.00 mL of O.1550 M HCl solution with a solution of NaOH of unknown molarity starts at a buret reading for NaOH of 0.33 mL The phenolphthalein indicator turns light pink the acid solution for over 30 seconds at a buret reading of 24.19 mL 2) What was the volume of HCl you started with? 3) How many moles of HCl were in the original solution? 4) Write the balanced chemical equation for the titration reaction. 5)...
145.0 moles of CaCO3 is dissolved in 5.0 L of water, what is the concentration of...
145.0 moles of CaCO3 is dissolved in 5.0 L of water, what is the concentration of CaCo3? 20C940.6C12.8016 ASM OB 2.5M OC 1.5M 0,0.5M OE 1M QUESTION 29 A solution was made by dissolving 53.0 g of Na2CO3 in 500.0 mL of water. What is the molarity of this solution? (molarity - moles of solute/liters of solution) 1Na23, 6C12.8016 CA50M OR 2.0M OC 1.5M 0.0.5M OL 1.0M QUESTION 30 If 0.250 mol of NaOH is dissolved in 125.0 mL of...
The student dissolved 2.050 grams of acid in 50 mL of distilled water. He then titrated...
The student dissolved 2.050 grams of acid in 50 mL of distilled water. He then titrated the unknown acid with a standardized NaOH solution. Unfortunately, the student over shot the end point and had to back titrate the solution with 2.17 mL of 0.98861 M HCl. Once the final end point was determined, the student had added a total of 29.15 mL of a 1.0324 M NaOH solution. A) How many moles of OH- were used to reach the end...
The student dissolved 2.050 grams of acid in 50 mL of distilled water. He then titrated...
The student dissolved 2.050 grams of acid in 50 mL of distilled water. He then titrated the unknown acid with a standardized NaOH solution. Unfortunately, the student over shot the end point and had to back titrate the solution with 2.17 mL of 0.98861 M HCl. Once the final end point was determined, the student had added a total of 29.15 mL of a 1.0324 M NaOH solution. A) How many moles of OH- were used to reach the end...
A 0.450 g sample of impure CaCO, (s) is dissolved in 50.0 mL of 0.150 M...
A 0.450 g sample of impure CaCO, (s) is dissolved in 50.0 mL of 0.150 M HCl(aq). The equation for the reaction is CaCO,(s) + 2 HCl(aq) — CaCl, (aq) + H, 0(1) + CO2(g) The excess HCl(aq) is titrated by 4.85 mL of 0.125 M NaOH(aq) Calculate the mass percentage of Caco, (s) in the sample. mass percentage: The zinc content of a 1.03 g ore sample was determined by dissolving the ore in HCl, which reacts with the...
4.00 g Na2CO3 is dissolved in H20 and titrated with HCI. 48.0 mL of a HCl...
4.00 g Na2CO3 is dissolved in H20 and titrated with HCI. 48.0 mL of a HCl solution were required to titrate the Na2CO3 solution. What is molarity of HCl solution? Na2CO3(aq) + 2HCl(aq) --> 2NaCl(aq) + H2O(l) + CO2(g) O 1.88 molar O 3.21 molar O 1.57 molar O 9.37 molar O 2.59 molar O 0.123 molar 0.553 molar 02.02 molar
Question 15 10 points Save Answer In a titration, a sample of HCl required 18.4 mL...
Question 15 10 points Save Answer In a titration, a sample of HCl required 18.4 mL of a 0.7971 M NaOH solution to reach the endpoint. Calculate moles of NaOH dispensed. (M=mol/L; mol=MxV) HCl(aq) + NaOH(aq) → H2O(l) + NaCl(aq) Answer to 4 sig figs. Do not include unit, mol.
heading Harding 2 A Student added 49.6 mL of 0.73 M solution of HCl to a...
heading Harding 2 A Student added 49.6 mL of 0.73 M solution of HCl to a beaker. The student then added 50 mL of DI water to the beaker. The HCl was titrated with 1248 ml of 0.73 M N O solution without reaching the equivalence point. Answer questions 21 - 25 with this information 21. How many moles of HCl are in the initial solution? (3 pts) 22. What is the molarity of the initial HCl solution after adding...
9. What is the hydroxide-ion concentration in a solution formed by combining 200 mL of 0.16 M HCl with 300. mL of 0.091 M NaOH at 25°C? HCl(aq) + NaOH(aq) + NaCl(aq) + H2O(1) 10. What is the pH of a solution prepared by dissolving 0.241 L of HCl(g), measured at STP, in enough water such that the total volume of the solution is 2.00 L? (R = 0.0821 L.atm/(K.mol)) (Use gas law equation to calculate Mole of HCl dissolved...
145.0 moles of CaCO3 is dissolved in 5.0 L of water, what is the concentration of CaCo3? 20C940.6C12.8016 ASM OB 2.5M OC 1.5M 0,0.5M OE 1M QUESTION 29 A solution was made by dissolving 53.0 g of Na2CO3 in 500.0 mL of water. What is the molarity of this solution? (molarity - moles of solute/liters of solution) 1Na23, 6C12.8016 CA50M OR 2.0M OC 1.5M 0.0.5M OL 1.0M QUESTION 30 If 0.250 mol of NaOH is dissolved in 125.0 mL of...
A 0.450 g sample of impure CaCO, (s) is dissolved in 50.0 mL of 0.150 M HCl(aq). The equation for the reaction is CaCO,(s) + 2 HCl(aq) — CaCl, (aq) + H, 0(1) + CO2(g) The excess HCl(aq) is titrated by 4.85 mL of 0.125 M NaOH(aq) Calculate the mass percentage of Caco, (s) in the sample. mass percentage: The zinc content of a 1.03 g ore sample was determined by dissolving the ore in HCl, which reacts with the...
4.00 g Na2CO3 is dissolved in H20 and titrated with HCI. 48.0 mL of a HCl solution were required to titrate the Na2CO3 solution. What is molarity of HCl solution? Na2CO3(aq) + 2HCl(aq) --> 2NaCl(aq) + H2O(l) + CO2(g) O 1.88 molar O 3.21 molar O 1.57 molar O 9.37 molar O 2.59 molar O 0.123 molar 0.553 molar 02.02 molar
Question 15 10 points Save Answer In a titration, a sample of HCl required 18.4 mL of a 0.7971 M NaOH solution to reach the endpoint. Calculate moles of NaOH dispensed. (M=mol/L; mol=MxV) HCl(aq) + NaOH(aq) → H2O(l) + NaCl(aq) Answer to 4 sig figs. Do not include unit, mol.
heading Harding 2 A Student added 49.6 mL of 0.73 M solution of HCl to a beaker. The student then added 50 mL of DI water to the beaker. The HCl was titrated with 1248 ml of 0.73 M N O solution without reaching the equivalence point. Answer questions 21 - 25 with this information 21. How many moles of HCl are in the initial solution? (3 pts) 22. What is the molarity of the initial HCl solution after adding...
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