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Calculate the standard enthalpy change for the reaction of an aqueous solution of barium hydroxide, Ba(OH)2, with an aqueous solution of ammonium nitrate, NH4NO3, at 25°C. (Figure 6.1 illustrated this reaction using solids instead of solutions.) The complete ionic equation is
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Chapter 6 Solutions
Student Solutions Manual for Ebbing/Gammon's General Chemistry
- The carbon dioxide exhaled in the breath of astronauts is often removed from the spacecraft by reaction with lithium hydroxide 2LiOH(s)+CO2(g)Li2CO3(s)+H2O(l) Estimate the grams of lithium hydroxide required per astronaut per day. Assume that each astronaut requires 2.50 103 kcal of energy per day. Further assume that this energy can be equated to the heat of combustion of a quantity of glucose, C6H12O6, to CO2(g) and H2O(l). From the amount of glucose required to give 2.50 103 kcal of heat, calculate the amount of CO2 produced and hence the amount of LiOH required. The H for glucose(s) is 1273 kJ/mol.arrow_forwardCalculate the molarity of AgNO3 in a solution prepared by dissolving 1.44 g AgNO3 in enough water to form 1.00 L solution.arrow_forwardWhat is Hrxn for reaction of iron(III) oxide and carbon monoxide to give iron metal and carbon dioxide gas? Use the following reactions: 4Fe(s)+3O2(g)2Fe2O3(s)H=1648.4kJ4CO(g)+O2(g)2CO3(g)H=565.98kJarrow_forward
- Describe some physical and chemical properties of acids and bases. What is meant by a strong acid or base? Are strong acids and bases also strong electrolytes? Give several examples of strong acids and strong bases.arrow_forwardDescribe in words how you would prepare pure crystalline AgCl and NaNO3 from solid AgNO3 and solid NaCl.arrow_forwardAccording to the Resource Conservation and Recovery Act (RCRA), waste material is classified as toxic and must be handled as hazardous if the lead concentration exceeds 5 mg/L. By adding chloride ion, the lead ion will precipitate as PbCl2, which can be separated from the liquid portion. Once the lead has been removed, the rest of the waste can be sent to a conventional waste treatment facility. How many grams of sodium chloride must be added to 500 L of a waste solution to reduce the concentration of the Pb2+ ion from 10 to 5 mg/L?arrow_forward
- Consider the following generic equation OH(aq)+HB(aq) B(aq)+H2OFor which of the following pairs would this be the correct prototype equation for the acid-base reaction in solution? If it is not correct, write the proper equation for the acid-base reaction between the pair. (a) hydrochloric acid and pyridine, C5H5N (b) sulfuric acid and rubidium hydroxide (c) potassium hydroxide and hydrofluoric acid (d) ammonia and hydriodic acid (e) strontium hydroxide and hydrocyanic acidarrow_forwardAssuming that 8.575 kg of NaCl (Hint: NaCl is a strong electrolyte) is distributed across a roadway, at what temperature is the road going to freeze in a winter storm? For the purposes of measuring water volume on the road surface, assume we are examining a 0.75 km stretch of road that is 15.6 meters wide with a 3.50 mm layer of water on top. Kf = 1.86°C·kg/mol, density = 0.997 g/cm3. Show your work.arrow_forwardSodium hydrogen carbonate (NaHCO3), also known as sodium bicarbonate or "baking soda", can be used to relieve acid indigestion. Acid indigestion is the burning sensation you get in your stomach when it contains too much hydrochloric acid (HCI), which the stomach secretes to help digest food. Drinking a glass of water containing dissolved NaHCO3 neutralizes excess HC1 through this reaction: HCl(aq) + NaHCO3(aq) → NaCl(aq) + H₂O(1) + CO₂(g) The CO2 gas produced is what makes you burp after drinking the solution. Suppose the fluid in the stomach of a man suffering from indigestion can be considered to be 100. mL of a 0.029 M HCl solution. What mass of NaHCO3 would he need to ingest to neutralize this much HCl ? Be sure your answer has the correct number of significant digits. X Śarrow_forward
- When in danger, bombardier beetles can fire a hot, toxic mixture of chemicals at their attacker. This mixture contains quinone, C6H4O2, a compound that is formed by the reaction of hydroquinone, C6H4(OH)2, with hydrogen peroxide, H2O2. The equation for the overall reaction is: → CHO, CH (OH), + H,O, -> 2(aq) + 2H,0, 2(aq) 2(aq) () ment HCI Use the following data to calculate the enthalpy change, in kJ mol-1, for the above reaction. en AH = + 177.4 kJ mol- g bevloaaib AH = -191-2kJ mol- CH (OH), CHOa4) + H. 2(g) 2( aq) 2( aq) H,O Dios H -> 2(aq) -> 20 218) → H,O AH = -241-8 kJ mol! + ½0, 2(g) H¸O → H,O) AH = -43-8 kJ mol!arrow_forwardWrite balanced net ionic equation for the following reaction: Fe(OH)2 (s) + H₂SO.(aq) →→→ ? Express your answer as a chemical equation. Identify all of the phases in your answer. ΑΣΦΑ CO ? A chemical reaction does not occur for this question. Submit Previous Answers Request Answer Part B X Incorrect; Try Again; One attempt remaining Write balanced net ionic equation for the following reaction HC1O₂(aq) Na(OH) (aq) 7 Note that HCIO: is a strong acid Express your answer as a chemical equation. Identify all of the phases in your answer. 4 4 CIE 2 P Pearsonarrow_forwardSulphuric acid (H2SO4 ), used in the manufacture of fertilizers, undergo decomposition and the acid dissociation constants are given as: Ka1=1x 10^3 and Ka2=1.2 x 10^(-2) .The initial concentration of sulphuric acid is given as 0.040M.Write the dissociation reactions. Calculate the concentration of [HSO4^- ] and [SO4^(2-)]. Calculate the pH of the acid solution. Write a discussion on the behaviour of polyprotic acids. (50 -100 words) Given: Ion product constant for water, Kw=1 x 10 ^(-14)arrow_forward
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