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- HW X DawnSign X DawnSig X Launch MX Final Proc X G physical x 45 Positiv. X urses/481634/quizzes/1007979/take This question may contain multiple correct answers. Make sure to select all correct answers. Which of the following solutions will be neutral? i. KBr ii. AlCl3 iii. NH4CI iv. LiF v. NH4CH3COO The following information will be helpful in answering this question: Ka for NH4+ = 5.6*10-10 Kb for F = is 2.9*10-11 Kb for CH3COO = 5.6*10-10 Oii iii iv O vDetermine the initial concentrations of the species below, after the solutions are mixed. Volume0.0350 MKMnO4(mL) Volume0.0650 MH2C2O4(mL) VolumeH2O(mL) InitialConcentrationKMnO4(M) InitialConcentrationH2C2O4(M) (3 significant figures) (3 significant figures) 1.00 1.00 18.00 2.00 2.00 16.00 3.00 3.00 14.00 4.00 4.00 12.00 5.00 5.00 10.0010. Calculate the pH of a solution of CH3NH2(aq) Methylamine, Kb = 4.3x104 that has an initial concentration of 0.20 M? Is it acidic, basic, or neutral solution?
- Acids and Bases Identify the classification of these substances. The choices are: SA for Strong Acid; WA for Weak Acid; SB for Strong Base: WB for Weak Base; NS for Normal Salt; AS for Acid Salt , and; BS for Basic Salt (NH4)2SO4 AgNO3 NaOCl HNO3 NH2OH NH3 K2SO4 HC7H5O2 CaCO3 Mg(OH)2 (CH3)NH H3ASO4V:YT نقطة واحدة is a group of materials or.. devices required to carry out . experiments apparatus labels carefully assistant هذا السؤال مطلوب öaalg äbäi Calculate the concentration of nitric acid solution with a volume of (2 ml) and a concentration (5M) from a * ? solution of a volume (5 ml) 4M 3M 2M 6M نقطة واحدة The bath contains. . that used in .boiling point experiment : IIFor a 0.15 M H3PO4(aq) solution, determine pH [H3PO4], [H2PO4-], [HPO42-], and [PO43-]
- 12. What is the pH of a 1.00 molar solution of NaNO2(aq)? The K, for nitrous acid is 7.0 x 104. a. 1.57 b. 3.15 c. 5.42 d. 8.58 e. 10.8514. Complete the following. a. Make a graph of the following data points. Is the relationship linear? If so, state the slope ume y-intercept. Are the variables directly proportional? Base Base pH pH (mL) (mL) 2.82 3.5 5.67 0.5 3.97 4.0 8.94 1.0 4.34 4.5 12.15 1.5 4.60 5.0 12.44 2.0 4.82 5.5 12.60 2.5 5.04 6.0 12.71 3.0 5.30 6.5 12.80 In some cases, the relationship between two variables is not linear, but the data can be manipulated to make a linear relationship. Using the data below, make a graph of the Volume vs. Pressure of a container, with volume being the independent variable. Is the relationship linear? If it is not, make a graph of Volume vs. 1/pressure. What would the pressure of the container be if the volume were 2.4 L? Show your calculation. Volume Pressure (L) (atm) 0.86 22.9 1.94 10.3 2.96 6.7 4.03 5.0 5.02 3.9 5.59 3.5The molar concentration of H3O+ was measured at 25 ° C. The pH and pOH should be calculated for the following [H3O+] (ideal solution) when a. [H3O+] = 15 μM b. [H3O+] = 1,5 mmol/dm3
- 11. What is the pH of 0.25 M NaNO, solution? [Ka of HNO, = 4.0 x 104] Points 2 2 5.6 6.0 3.7 9.0 8.4Schoology 3:25 PM Tue Apr 12 < 88 Q D O S22 1020 Unit 3 PS 1 - 22 1020 Unit 1 P. x Worksheet 15 Acid. x Worksheet 16 Wea. x Worksheet 19 Titr. Planner Untitled (1) S22 1020 4. Pyridine is a weak base with K, = 1.7x10-1o. C5H;N(aq) + H,O) C5H;NH (aq) + OH (aq) а. Write the K, expression for this reaction.ALEKS - Alec Nema - Learn G hydrochloric acid molar mass - G X + -> A www-awu.aleks.com/alekscgi/x/Isl.exe/1o_u-lgNslkr7j8P3jH-IvUrTNdLZh5A8CnG03PBGuXr8iCPa7ZMmym9ptTdXEBuyh4nRbErwikmldvGYg7DAf2EO_JCH30... Paused Apps Sprouts Academy. O Online Tutoring C 400 Request Heade. Q Weather & Soil CH. O ADVANCED MATERIAL Alec v Calculating solubility A geochemist in the field takes a small sample of the crystals of mineral compound X from a rock pool lined with more crystals of X. He notes the temperature of the pool, 26.° C, and caps the sample carefully. Back in the lab, the geochemist dissolves the crystals in 800. mL of distilled water. He then filters this solution and evaporates all the water under vacuumn. Crystals of X are left behind. The researcher washes, dries and weighs the crystals. They weigh 0.032 kg. Using only the information'above, can you calculate Oyes the solubility of X in water at 26.° C? O no If you said yes, calculate it. Be sure your answer has a unit symbol and 2…