1. Which among these is/are desirable properties for the type of precipitate required in gravimetric analysis? I. large particles III. known composition A. I only II. reactive with atmospheric constituents IV. small particles C. I & III В. I & II D. III & IV Е. I, П, I

1. Which among these is/are desirable properties for the type of precipitate required in gravimetric analysis? I. large particles III. known composition A. I only II. reactive with atmospheric constituents IV. small particles C. I & III В. I & II D. III & IV Е. I, П, I

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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с www.lit.con X 1 https://www-awu.aleks.com/alekscgi/x/lsl.exe/10_u-lgNslkr7j8P3jH-IvW34vgkKW174UzCeyfT O Chemical Reactions Calculating molarity using solute moles Free Chemis x Pearson My X Content/In X A ALEKS-Mil x mmol L x10 A chemist prepares a solution of iron(III) bromide (FeBr3) by measuring out 332. µmol of iron(III) bromide into a 250. mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in mmol/L of the chemist's iron(III) bromide solution. Round your answer to 3 significant digits. X Set Notatic X + Warning X Qgoogle-Se X Takd40pjxLupf5tRptEP2ikm06vJ_4E6KAMWrky... A ✩ S 0/5 Milton V 000 H8 ...
5. The concentration of an unknown sample of sulfuric acid was determined by the method used in this experiment, using two sets of titrations. In the first titration the sodium hydroxide was standardized by titrating 0.1355g of oxalic acid dihydrate (molar mass - 126.07g/mole) with 25.30mL of sodium hydroxide solution. In the second titration 20.00mL of the unknown sulfuric acid solution was titrated with 22.85mL of the sodium hydroxide solution. What was the concentration of the sulfuric acid? (Show your work!!)
3. Determine the number of components in each of the following systems a. CH3COOH + CHẠOH + CH3COOC2Hs + H2O b. Aqueous solution of sodium acetate (NaC₂H5O₂)
7. How many Equivalents are generated for each electrolyte solution? a. 2.0 mole Fe 3+ (aq) b. 2.5 mole SO 2- c. 4.0 mole PO 4 d. 3.5 mole CO. 3- 2- = 3 (aq) = = = 4 (aq) 8. How many mL of a 4.50 M HCl solution are needed to completely react with 20.5 g of CaCO3 if the chemical reaction is as shows below? Hint: use example in Section 9.5 2HC1 + CaCO (aq) 3(s) CaCl + CO 2(aq) 2(g) + H₂OO
5 volume of base ..
esc Fr 2 What mass of precipitate is formed when 100. mL of 0.300 M NaCl reacts with 100. mL of 0.150 M Pb(NO3)? Round your answer to 3 significant digits. 55°F Clear 1 F1 B.D F2 @ 2 F3 3 E F4 LA 4 x10 Q Search F5 X % 5 S F6 C A 6 F7 © 2023 McGraw Hill LLC. All Rights Reserved. Terms of Use | Privacy Center Accessibil B 8 & 7 F8 * ос F9 DELL prt sc F10 home Submit Assignment F11 A end F12 insert + 5/
Part B: Sulfate. A 1.109 g sample of a material known to contain sulfate is dissolved and the sulfate is precipitated with Pb2+ ion. After filtering, washing and drying, the precipitated PbSO4 weighed 1.356 g. Calculate the percent of sulfate ion this sample.
in a stock solution of 5 M base, what volume is needed for the base to titrate with the acid? in each instance? If each acid solution has a concentration of 10 M in a volume of 300 mL, and . Create balanced equations for the reactions between each acid and base. What salt is created w your wOrk. Carry he umts uog" significant figure rules. o 5 a. Hydrochloric acid and calcium carbonate. b. Phosphoric acid and sodium bicarbonate.
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12. An unknown precipitate of sulfide from the Group II cations dissolves upon the addition of 20 drops of 3M KOH, this unknown cation may be a. Bismuth b. Tin с. Сорper d. Cadmium e. Iron
12. For each reaction below, the starting mass/volume of each reagent is provided as well as the final mass of product isolated. Calculate the theoretical and percent yield for each reaction. a. b. OH OH + l MW 122 1.50 g CI MW 141 d 1.21 g/mL 0.250 mL MW 60.1 7.40 g 1. PhMgBr MW 181 905 mg 2. HCI H3PO4 OH Ph MW 164 1.86 g Ph MW 260 547 mg + H₂O