Lab 4 Alka Selzer Strength_ Assignment

Subject: chem

Could someone please help! No plagiarism, please! Could someone please help me with this! What is in the image is what I have been able to get done so far No Plagiarism Please!

Classify each reaction as precipitation, acid-base, or no reaction. If the reaction is a precipitation, record either the Ksp or solubility of the product to determine if a precipitate is likely to be seen. Use a reference to see if the product formed may be colored or have an odor. If no reaction happens, write NR in the classification line.   Thank you!

In a terrible accident, a solution consisting of 2.37 kg of nitric acid, HNO3, was spilled on the lab floor. Very quickly, you decide to throw 2.00 kg of sodium carbonate, Na2CO3, on the spilled acid. You then run out of the building due to the significant quantities of carbon dioxide that would form due to the reaction. As you stand outside, you wonder, "Did I add enough sodium carbonate to neutralize the acid?". a) Did you add enough sodium carbonate to neutralize the acid? Yes Ο No b) In the event that you did not add enough sodium carbonate, how much extra would be needed to completely neutralize the acid? If you have added enough, please enter a value of 0 (zero). Needed 0 c) In the event that you did add enough sodium carbonate, how much extra did you add? If you didn't add any extra, please enter a value of 0 (zero). Excess 09 g g

Balanced formula equation: For each combination of solutions that produces new product, write correct chemical formula for the new compounds that could form from the ions present . Indicate which of the new compounds is a precipitate

Complete the reactions below, briefly explaining in each case type of reaction taking place. NH2 V. vi. 1. NaNO2, HCI ??? 2. CuCl, 60 °C CI ??? NO2 OH NO2

based on your results complete and balance the following reactions. Make sure you correctly identify the state if each reactant and product. For the products you will have to predict the information of a precipitate. All componds are in water solutions. CoCl2 + AgNO3 —- NaSO4 + AlCl3 —- Li2CO3 + HNO3 — NiSO4 + FeCl3 — KOH + CuSO4 — Ba(OH)2 + ZnSO4 —

Directions: Inspect the given reactions very carefully, follow the given step- by-step procedure to balance the equation. 1. Izig) + Clzg) + H2Om → HIO3(aq) + HClaq) 2. Sno) + HNO309) → SnOz{s) + NO20) + H2O1) 3. Alke) + Agʻ(aq) → AB+ + Ags) 4. Kis) + Cr* (ag) → Cris) + K°(@q} 5. Zn(s) + Sn2 aq) → Zn²*(aq) + Sn(s) 6. H*(aq) + Cris) → Hzg) + Cr*(aq) 7. Cus) + NO3(ag) → Cu2" (aq) + NOz(g) 8. H2O2(aq) + CIO2(aq) → CIO2°(aq) + Ozg) 9. NO2-tag) + Al(s) → NH3g) + AIO2-(aq) 10. Als) + MnOs(aq) → MnOz(s) + Al(OH)«{(aq) (basic solution) (acidic solution) (acidic solution) (basic solution) (basic solution) item 2 and 3

In Part G, is the reaction endothermic or exothermic? Explain based on the color change that resulted from heating the solution. Rewrite the chemical equation showing the heat as a reactant or product to depict your conclusion.

A chemist working for a super glue company is asked to find a way to speed up a 3 component reaction used in the manufacturing process. The general reaction can be written as aA + bB + cC → dD where product D is the super glue. The chemist performs the reaction and measures the concentration of chemical A as time passes. Plotting the obtained data produces the following graphs: If the initial concentration of A is 1.0 M, what is the value of k? *Use correct units and write exponents as unit^-# if necessary.

Reaction Add 1 drop of … Add 1 drop of… Did a precipitate form?   1 Fe(NO3)3       NaOH   2 AgNO3   3 Zn(NO3)2   4 Al(NO3)3   5 Pb(NO3)2

A student mixes 10.00 mL of a 0.00100 M solution of iron(III) nitrate with 2.00 mL of a 0.00200 M potassium thiocyanate solution and 8.00 mL of water. Before any reaction begins, what are the initial concentrations of iron (III) ion and thiocyanate ion? [Fe3+] = ___ x 10 __ M [SCN-]= ___ x 10 __ M

Pls help ASAP

Please help answer these two questions and let me know if the answer is NR.

8.Iron fluoride (FeF2) dissociates according to the following equation: FeF2(s) ⇌ Fe2+(aq) + 2F–(aq) If the [Fe2+] in a saturated solution is measured to be 2.05 × 10–4 mol/L, what is the concentration of fluoride (F–) ions in a saturated solution?     a,.1.03 × 10–8 mol/L   b.4.10 × 10–4 mol/L   c.4.20 × 10–8 mol/L   d.2.05 × 10–4 mol/L

24. Suppose that you add excess sodium hydroxide, NaOH(aq), to 100 mL of magnesium chloride, MgCl₂(aq). After the precipitate has been filtered and dried, you determine that it has a mass of 2.04 9. a. Calculate the molar concentration of the original magnesium chloride solution. b. What was the concentration of the chloride ions in the original solution? Page Break 37. Write a procedure that a laboratory technician could use to prepare 2.0 L of 0.25 mol/L sulfuric acid, H₂SO4(aq), using 12.0 mol/L stock solution. Include appropriate safety precautions. 57. Hypochlorous acid, HOCI(aq), is a weak acid that is used as a bleach and a disinfectant. When 25.00 mL samples of hypochlorous acid were titrated with 1.00 mol/L sodium hydroxide, NaOH(aq), an average of 19.15 mL of sodium hydroxide was needed to neutralize the acid. Calculate the molar concentration of the hypochlorous acid.

O Kf will change depending on what solute is dissolved in the solvent. QUESTION 11 Which term can be used to describe the process in the reaction below? 2 NaHCO3 (s) Na2CO3 (s) + H2O (g) + CO2 (g) Dissociation Precipitation Hydration Decomposition QUESTION 12 Which of the following would NOT be considered valid sources of error in a laboratory experiment? Click Save and Submit to save and submit. Cick Suve All Answers to save all ansicers

1.     Reaction Add 1 drops of … Add 1 drops of… Did a precipitate form?   1 Fe(NO3)3         Na3PO4   2 AgNO3   3 Zn(NO3)2   4 Al(NO3)3   5 Pb(NO3)2