TUI 14eaction Progress Lab Activity Name 2. Consider the following chemical reaction. 3Zn(s) + 2H3PO4(aq) → Zna(PO4)2(s) + 3H2(g) IT 15.0 grams of Zn are added to 250.0mL of 0.580M H3PO4 and allowed to react for To mindtes, 21.2 grams of Zn3(PO4)2(s) are formed, What concentration of H3PO4 remains after 10 minutes (assume total solution volume of 250.0 mL) 3H2(g) -> Zn3(PO4)2(s) 3Zn(s) 2H3PO4(aq) initial moles change in moles (in terms of x) new moles (expression) new moles (numerical value) Show calculations below:
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- In a 15-cm. evaporating dish is placed 15.4 g. (0.10 mole) of finely powdered biphenyl (Note 1). The dish is set on a porcelain rack in a 30-cm. desiccator with a 10-cm. evaporating dish under the rack containing 39 g. (12 ml., 0.24 mole) of bromine. The desiccator is closed, but a very small opening is provided for the escape of hydrogen bromide (Note 2). The biphenyl is left in contact with the bromine vapor for 8 hours (or overnight). The orange solid is then removed from the desiccator and allowed to stand in the air under a hood for at least 4 hours (Note 3). At this point, the product weighs about 30 g. and has a melting point in the neighborhood of 152°. The crude 4,4'-dibromobiphenyl is dissolved in 75 ml. of benzene, filtered, and cooled to 15°. The resulting crystals are filtered, giving a yield of 23.4– 24.0 g. (75–77%) of 4,4'-dibromobiphenyl, m.p. 162–163° (Note 4). How large of a scale can this reaction be run safely? Is it expensive?The reaction of 47.3 mL of an aqueous HCl solution with excess MgCO3 produces 538 mL of CO2(g) at 22.9°C and 0.940 atm. 2HCl(aq) + MgCO3(s) → CO2(g) + H2O( ) + MgCl2(aq) What is the molarity of the HCl solution? answer choices: 0.0773 M 0.440 M 0.880 M 11.4 M5. Barium chloride is reacted with sodium sulfate to produce barium sulfate and sodium chloride. How many moles of the precipitate is produced from 0.8 moles of BaCl2?A. 0.4 moleB. 0.8 moleC. 1.6 molesD. None of the above 6. 315mL of water was added to 2100 mL of 19M NaCl solution. What is the new concentration of the solution?(Use the given information: MW: Na = 23g / mol , CI=35g/mol)A. 2.85 MB. 2.48 MC. 18.60 MD. 19.0 M
- At 25°C and 1 atm, 0.500 mol/kg solution of NaCl is water has VNaCI = 18.63 cm³/mol and VH2O = 18.062 cm³/mol. Find the volume of a solution prepared by dissolving 0.5000 mol of NaCl in 1000.0 g of water.Aluminum is one of the most versatile metals. It is produced by the Hall-Heroult process, in which molten cryolite, Na3AlF6, is used as a solvent for the aluminum ore. Cryolite undergoes very slight decomposition with heat to produce a tiny amount of F2, which escapes into the atmosphere above the solvent. Kc is 2 10-104 at 1300 K for the reaction. Na3AlF6(l) = 3 Na(l) + Al(l) + 3 F2(g) What is the concentration of F2 over a bath of molten cryolite at this temperature?Find the volume in liters of carbon dioxide gas (CO2) produced at 1.00 atm pressure and 25.0 ∘C from 5.37 mL of 1.00 M HNO3(aq) solution with an excess of sodium carbonate (Na2CO3) according to the unbalanced reactionHNO3(aq) + Na2CO3(aq) → NaNO3(aq) + H2O(l) + CO2(g) Give the answer with 3 or more significant figures.
- It is known that acid content has a major effect on theflavor of vinegars, but most cheaper vinegars are diluted similarly to 5% acidity Wt./vol. % is equivalent to gsolute per 100mL solution (so 5% is equivalent to 5 g acid/100 mL solution). a.) First, calculate the approximate molar concentration of acetic acid in the 5% wt./vol vinegar. b.) Next, calculate the expected molarity of acetic acid in the solution upon dilution by a factor of 5. Thank you!Use only the first decimal points (X.X) for atomic masses. R = 8.314 L*kPa/mole*K . In a 2.50 L reactor at 27 *C, sodium oxide captures CO2 from the gas phase by the following reaction:Na2O(s) + CO2(g) --> Na2CO3(s)36.2 g of Na2O(s) and 26.1 g of CO2(g) are placed into the reactor. What is the limiting reagent? Na2O(s) CO2(g) What is the final pressure of the system? kPaThe reaction is balanced: citric acid: 3NaHCO3 + C6H10O8 -> Na3 C6H7O8 + 3H2O + 3 CO2 Show the calculations required to determine quantities of sodium hydrogen carbonate and citric acid: (3NaHCO3 + C6H10O8) . Pressure is 100.800kPa, Temperature is 23 C and Volume is 784ml.
- In order to form Ba(IO3)2, 500 mL of 0.5000 M Ba(NO3)2 was mixed with 500 mL of 0.0500 M NaIO3. Ksp= 1.57x10^-9 How many millimoles of NaIO3 are needed to completely react with the Ba(NO3)2? 500 mmol 250 mmol 25 mmol 12.5 mmolb) A sample consisting ofvarious gases contains 3.5 * 10-6 mole fraction of radon.This gas at a total pressure of 32 atm is shaken with waterat 30 °C. Calculate the molar concentration of radon in thewater.Souring of wine occurs when ethanol is converted to acetic acid by oxygen: C2H5OH(l) +O2(g)--->CH3COOH(g)+H2O(l). A 1.00 L bottle of wine labeled as 7.00% (%v/v) ethanol, is found to have a defective seal. Analysis of 1.00 mL showed that there were 0.0274 g acetic acid in that 1.00 mL. The density of ethanol is 0.816 g/mL. (a) What mass of oxygen must leaked into the bottle in pounds(lb) (b) What is the percent yield for the conversion of ethanol to acetic acid, if oxygen is in excess