Question 25. 12:52< Вackhw7.pdf25: Which observation is consistent with a chemical reaction occurring? Why?Solid copper deposits on a piece of aluminum foil when the foil is placed in ablue copper nitrate solution. The blue color of the solution fades.Liquid ethyl alcohol turns into a solid when placed in a low-temperaturefreezerA white precipitate forms when solution of barium nitrate and sodium sulfateare mixedA mixture of sugar and water bubbles when yeast are added. After severaldays, the sugar is gone and ethyl alcohol is found in the water35: Write the balanced chemical equation for each chemical reactionSolid lead(II) sulfide reacts with aqueous hydrochloric acid to form solidlead(II) chloride and dihydrogen sulfide gasGaseous carbon monoxide reacts with hydrogen gas to form gaseousmethane (CH4) and liquid waterSolid iron(III) oxide reacts with hydrogen gas to form solid iron and liquidwaterGaseous ammonia (NH3) reacts with gaseous oxygen to form gaseousnitrogen monoxide and gaseous water39: When solid sodium is added to liquid water, it reacts with the water to producehydrogen gas and aqueous sodium hydroxide. Write a balanced chemical equation for thisreaction37: Write the balanced chemical equation for each chemical reactionSolid magnesium reacts with aqueous copper(I) nitrate to form aqueousmagnesium nitrate and solid copperGaseous dinitrogen pentoxide decomposes to form nitrogen dioxide andoxygen gasSolid calcium reacts with aqueous nitric acid to form aqueous calcium nitrateand hydrogen gasLiquid methanol (CH3OH) reacts with oxygen gas to form gaseous carbondioxide and gaseous water41: Sulfuric acid in acid rain forms when gaseous sulfur dioxide pollutant reacts withgaseous oxygen and liquid water to form aqueous sulfuric acid. Write a balance chemicalequation for this reaction47: Balance each chemical equationNa2S(aq) + Cu(NO3)2(aq) -> NaNO3(aq) + CuS(s)« PreviousNext >15000DashboardCalendarТo DoNotificationsInbox

A chemical reaction is usually accompanied by easily observed physical effects such as emission of…

25: Which observation is consistent with a chemical reaction occurring? Why? Solid copper deposits on a piece of aluminum foil when the foil is placed in a blue copper nitrate solution. The blue color of the solution fades. Liquid ethyl alcohol turns into a solid when placed in a low-temperature freezer A white precipitate forms when solution of barium nitrate and sodium sulfate are mixed A mixture of sugar and water bubbles when yeast are added. After several days, the sugar is gone and ethyl alcohol is found in the water

25: Which observation is consistent with a chemical reaction occurring? Why? Solid copper deposits on a piece of aluminum foil when the foil is placed in a blue copper nitrate solution. The blue color of the solution fades. Liquid ethyl alcohol turns into a solid when placed in a low-temperature freezer A white precipitate forms when solution of barium nitrate and sodium sulfate are mixed A mixture of sugar and water bubbles when yeast are added. After several days, the sugar is gone and ethyl alcohol is found in the water

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter18: Electrochemistry

Section: Chapter Questions

Problem 9RQ: What characterizes an electrolytic cell? What is an ampere? When the current applied to an...

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