Chemistry I Laboratory Manual, 2021 RevisionQuestions:1) Complete and balance each of the following chemical equations.Pb(NO3)2(aq) + ____Li2SO4(aq) →_Nal(aq) + __Pb(NO3)2(aq) →Hg(1) + HCl(aq) →Fe(s) +____O2(g) →Cu(s) + H₂SO4(aq) →Rb₂O(s) + H₂O(1) →Co2(CO3)3(S) + heat →H₂O(1) +Mg(s) +AS2O5(s) →NaClO3(s) + heat →_H₂SO4(aq) →holteups lasimon boonsinCa(s) + _H₂O(1)→ __Ca(OH)2(aq) + H₂(g)CaHCaHnupsupo sinoi buonnistnouo omn2) Balance and write net ionic chemical equations for each of the following reactions.H3PO4(aq) + KOH(aq) → H₂O(1) + K3PO4(aq)окOKHP61Iso boonslatmoirs pilwwwm.

Concept based on the balancing of chemical reactions and writing out net ionic equations.

Chemistry I Laboratory Manual, 2021 Revision Questions: 1) Complete and balance each of the following chemical equations. _Pb(NO3)2(aq) +_ _Li₂SO4(aq) → Nal(aq) + Pb(NO3)2(aq) → _Hg(1)+ HCl(aq) → Ca(s) + H₂O(1)→ HO Ca Fe(s) + _O₂(g) → Cu(s) + H₂SO.(aq) → Rb₂O(s) + H₂O(1)→ Coz(CO3)(s) + heat → H₂O(1) + As2Os(s) → NaCIO (s) + heat → Mg(s) + H₂SO4(aq) → 2) Balance and write net ionic chemical equations for each of the following reactions. KOH(aq) → K₁PO4(aq) _H₂PO4(aq) + HPOK 1 I H H₂O(1) + POK Ca(OH)2(aq) + H₂(g) Ca endor 61

Chemistry I Laboratory Manual, 2021 Revision Questions: 1) Complete and balance each of the following chemical equations. _Pb(NO3)2(aq) +_ _Li₂SO4(aq) → Nal(aq) + Pb(NO3)2(aq) → _Hg(1)+ HCl(aq) → Ca(s) + H₂O(1)→ HO Ca Fe(s) + _O₂(g) → Cu(s) + H₂SO.(aq) → Rb₂O(s) + H₂O(1)→ Coz(CO3)(s) + heat → H₂O(1) + As2Os(s) → NaCIO (s) + heat → Mg(s) + H₂SO4(aq) → 2) Balance and write net ionic chemical equations for each of the following reactions. KOH(aq) → K₁PO4(aq) _H₂PO4(aq) + HPOK 1 I H H₂O(1) + POK Ca(OH)2(aq) + H₂(g) Ca endor 61

Introductory Chemistry: A Foundation

9th Edition

ISBN:9781337399425

Author:Steven S. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Donald J. DeCoste

Chapter6: Chemical Reactions: An Introduction

Section: Chapter Questions

Problem 20QAP: Many over-the-counter antacid tablets are now formulated using calcium carbonate as the active...

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Many over-the-counter antacid tablets are now formulated using calcium carbonate as the active ingredient, which enables such tablets to also be used as dietary calcium supplements. As an antacid for gastric hyperacidity, calcium carbonate reacts by combining with hydrochloric acid found in the stomach, producing a solution of calcium chloride, converting the stomach acid to water, and releasing carbon dioxide gas (which the person suffering from stomach problems may feel as a “burp”). Write the unbalanced chemical equation for this process.
The space shuttle environmental control system handles excess CO2 (which the astronauts breathe out; it is 4.0% by mass of exhaled air) by reacting it with lithium hydroxide, LiOH, pellets to form lithium carbonate, Li2CO3, and water. If there are seven astronauts on board the shuttle, and each exhales 20. L of air pee minute, how long could clean air be generated if there were 25,000 g of LiOH pellets available for each shuttle mission? Assume the density of air is 0.0010 g/mL.
Many cereals are made with high moisture content so that the cereal can be formed into various shapes before it is dried. A cereal product containing 58% H2O by mass is produced at the rate of 1000. kg/h. What mass of water must be evaporated per hour if the final product contains only 20.% water?
One of relatively few reactions that takes place directly between two solids at room temperature is Ba(OH)2+8H2O(s)+NH4SCN(s)Ba(SCN)2(s)+H2O(l)+NH3(g) In this equation, the 8H2O in Ba(OH)2 8H2O indicates the presence of eight water molecules. This compound is called barium hydroxide octahydrate. a. Balance the equation. b. What mass of ammonium thiocyanate (NH4SCN) must be used if it is to react completely with 6.5 g barium hydroxide octahydrate?
Hydrogen peroxide is used as a cleansing agent in the treatment of cuts and abrasions for several reasons. It is an oxidizing agent that can directly kill many microorganisms; it decomposes on contact with blood, releasing elemental oxygen gas (which inhibits the growth of anaerobic microorganisms); and it foams on contact with blood, which provides a cleansing action. In the laboratory, small quantities of hydrogen peroxide can be prepared by the action of an acid on an alkaline earth metal peroxide, such as barium peroxide: BaO2(s)+2HCl(aq)H2O2(aq)+BaCl2(aq) What mass of hydrogen peroxide should result when 1.50 g barium peroxide is treated with 25.0 mL hydrochloric acid solution containing 0.0272 g HCI per mL? What mass of which reagent is left unreacted?
When calcium carbonate is heated strongly, it evolves carbon dioxide gas. CaCO3(s)CaO(s)+CO2(g) 25 g of CaCO3 is heated, what mass of CO2would be produced? What volume would this quantity of CO2 (CU at STP?
On Easter Sunday, April 3, 1983, nitric acid spilled from a tank car near downtown Denver, Colorado. The spill was neutralized with sodium carbonate: 2HNO3(aq)+Na2CO3(aq)2NaNO3(aq)+H2O(l)+CO2(g) a. Calculate H for this reaction. Approximately 2.0 104 gal nitric acid was spilled. Assume that the acid was an aqueous solution containing 70.0% HNO3 by mass with a density of 1.42 glcm3. What mass of sodium carbonate was required for complete neutralization of the spill, and what quantity of heat was evolved? (Hf for NaNO3(aq) = 467 kJ/mol) b. According to The Denver Post for April 4, 1983, authorities feared that dangerous air pollution might occur during the neutralization. Considering the magnitude of H, what was their major concern?
The US Environmental Protection Agency (EPA) places limits on the quantities of toxic substances that may be discharged into the sewer system. Limits have been established for a variety of substances, including hexavalent chromium, which is limited to 0.50 mg/L. If an industry is discharging hexavalent chromium as potassium dichromate (K2Cr2O7), what is the maximum permissible molarity of that substance?
Write balanced chemical equations corresponding to each ofthe following descriptions: (a) Solid calcium carbide, CaC2,reacts with water to form an aqueous solution of calcium hydroxideand acetylene gas, C2H2. (b) When solid potassiumchlorate is heated, it decomposes to form solid potassiumchloride and oxygen gas. (c) Solid zinc metal reacts withsulfuric acid to form hydrogen gas and an aqueous solution ofzinc sulfate. (d) When liquid phosphorus trichloride is added towater, it reacts to form aqueous phosphorous acid, H3PO31aq2,and aqueous hydrochloric acid. (e) When hydrogen sulfide gasis passed over solid hot iron(III) hydroxide, the resulting reactionproduces solid iron(III) sulfide and gaseous water.
Write balanced chemical equations corresponding to each ofthe following descriptions: (a) Solid calcium carbide, CaC2,reacts with water to form an aqueous solution of calcium hydroxideand acetylene gas, C2H2. (b) When solid potassiumchlorate is heated, it decomposes to form solid potassiumchloride and oxygen gas. (c) Solid zinc metal reacts with sulfuric acid to form hydrogen gas and an aqueous solution ofzinc sulfate. (d) When liquid phosphorus trichloride is added towater, it reacts to form aqueous phosphorous acid, H3PO3(aq),and aqueous hydrochloric acid. (e) When hydrogen sulfide gasis passed over solid hot iron(III) hydroxide, the resulting reactionproduces solid iron(III) sulfide and gaseous water.