Piece +5 (1 pt) 100.00 mL of 1.0 MPb(NO3)2 is added to 150.00 mL of 0.215 M KOH. What is the concentration of KOH?...
If 15.0 mL of 8.80×10-4 M Pb(NO3)2 are added to 22.0 mL of 3.10×10-5 M KI, will solid PbI2 (Ksp = 8.7×10-9) precipitate? If a precipitate will not form, what iodide ion concentration will cause a precipitate of lead iodide to form? If a precipitate will form, what is the minimum [I-] that could have been present without initiating precipitation? Assume the total volume used in the above example. M
I mix the following things into a SINGLE 1 L beaker: 150 mL of 0.100 M Na2COs 50.0 mL of 0.050 M BaCl2 100.0 mL of 0.025 M Cu(NO3)2 100.0 mL of 0.125 M Ca(NO3)2 50.0 mL of 0.100 M NaOH 50.0 mL of 1.00 M HCI After the "soup" is all done "cooking".. .er...after equilibrium has been established, tell me the following: 4. What (if any) are all of the precipitates? 5. What is the mass of each precipitate?...
A solution composed of 5.00 mL of 0.0120 M Pb(NO3)2, 3.00 mL of 0.0300 M KI, and 2.00 mL of 0.20 M KNO3 is determined spectroscopically to have [1'] = 6.25 x 10 Show all steps of your calculations. Credit will not be given if work is not shown. (2 pt) a). How many moles of l' is present initially? OIL OB S+3+2=10nL M = a. 1o-s b). How many moles of I should precipitate from the solution? " Xo...
f) (6 pts) Which of the following mixtures will make a buffer? (Circle only one!) r? Circle onlyone f)(6 1000 mL fh following mix oc m will make a b S a) 100 mL of 1.0 M HCI +100 mL of 1.0 M NaOH +100 mL of 0.50 M HF 100 mL of 1.0 M HCI c)100 mL of 1.0 M HF +100 mL of 0.50 M NaOH 100 mL of 1.0 M HF +100 mL of 1.0 M NaOH...
1) 20. mL sample of 0.20 M HOCl is added to 25.0mL of 0.20M KOH. What is the pH of the solution? -8 HOCl (Ka = 3.5 x 10 ) 2) The ideal pH for the pool is 7.4. What is the ratio of (OCl- ) to (HOCl) needed to maintain the swimming pool at a pH of 7.4? 3) What would be the new pH if you added 0.3 moles of NaOH to 1.0L of the pool water at...
Bonus 2: (5 Pts Max; partial credit allowed.) If 5.00 mL of 0.950 M KOH are added to a 1 L of 0.500 M CaCl2, will a precipitate form? The Ksp for the potential precipitate is 8.0 x 10-6. SHOW YOUR WORK! If you use one or more assumptions, state them clearly.
1) One hundred (100) ml of a 1.00 M solution of HCl is diluted with water to prepare a 0.200 M solution. What is the volume of the resulting 0.200 M solution? Or asked another way, to what volume must the original solution be diluted? (3 points) 2) Lithium hydroxide, LiOH, is used in spacecraft to absorb the carbon dioxide exhaled by astronauts. Given 1.3 kg of LiOH, how many kg of CO2 can be absorbed? (10 Pts. The reaction...
CHEM 1033, Sample Exam II (Homework) Chapters 3,4,6 Name: 1. What volume of 0.132 M KOH solution would react completely with 25.8 ml. of 0.198 M HCl according to the following cquation? HCI+KOH --->KCI+H.O a) 86.4 ml. b) 25.7 ml. c) 38.7 ml d) 17.2 ml. 2. Which one of the following is a strong soluble base? a) Ni(OH): b) Mg(OH): c) RLOH d) ChOH) c) Fe(OH) 3. Which one of the following is a strong acid? a) HF b)...
5. What was the purpose of the NaNO3 solution in this experiment? 6. Could a solution of NaCl be used instead of NaNO3? 7. What was the purpose of FeSO4 solution in this experiment? 8. Could a solution of FeCl, be used instead of FeSO4? 9. Could a solution of NaSO4 be used instead of FeSO4? 10. Calculate the standard cell potential for the spontaneous redox reaction between a Pb(s)/Pb(NO3)2(aq) half-cell and a Ag(s)/AgNO3(aq) half-cell. Which metal would be oxidized?...