We now know the moles of hydroxide used in the titration. But, remember that, of the 100 mL of solution made from the ashes, only 20 mL were used for the titration. What is the total amount of hydroxide produced by the ashes? Volume HCl used: 5.44 mL Concentration HCl solution = 0.10 M 5.44 x 10-4 mol HCl used 5.44 x 10-4 mol OH in 20 mL solution X mol OH- resubmit total mol OH = 100 mL solution X Incorrect 5.44 x 104 mol 20 mL solution

O Microsoft O shift V A chemistry student weighs out 0.0608 g of formic acid (HCHO₂) into a 250. mL volumetric flask and dilutes to the mark with distilled water. He plans to titrate the acid with 0.1400M NaOH solution. OCHEMICAL REACTIONS Determining the volume of base needed to titrate a given mass... Calculate the volume of NaOH solution the student will need to add to reach the equivalence point. Be sure your answer has the correct number of significant digits. W Microsoft Microsoft 6.52.210... tab esc caps lock mL control Explanation ! 1 (8) Q A Check N © 2 W S #3 X T option command E x10 X D NOV 14 $ 4 C R S F do L % 5 V T G tv ♫ 6 MacBook Pro 9 Y & 7 H Ⓒ2022 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center | Accessibility U 8 1 9 BN M A O J K O O JOD 05 L H W P > { I command option DOCX + 11 ? | 1 9 OC

OCHEMICAL REACTIONS Determining the volume of base needed to titrate a given mass... chemistry student weighs out 0.0570 g of chloroacetic acid (HCH₂CICO2) into a 250. mL volumetric flask and dilutes to the mark with distilled water. He lans to titrate the acid with 0.2000M NaOH solution. Calculate the volume of NaOH solution the student will need to add to reach the equivalence point. Be sure your answer has the correct number of significant digits. mL Explanation Check AUG 2 0.0 X e S tv W 3/5 X MacBook Air Hu © 2023 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center A

solution after precipitation is complete. 68. The drawings below represent aqueous solutions. Solution A is 2.00 L of a 2.00-M aqueous solution of copper(II) nitrate. Solution B is 2.00 L of a 3.00-M aqueous solution of potas- sium hydroxide. (0) suiro Cu²+ ebro NO3 БО K+ OH™ A B a. Draw a picture of the solution made by mixing solutions A and B together after the precipitation reaction takes place. Make sure this picture shows the correct relative volume compared to solutions A and B, and the correct relative number of ions, along with the correct relative amount of solid formed. b. Determine the concentrations (in M) of all ions left in solution (from part a) and the mass of solid formed.