Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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Transcribed Image Text:Which of the following materials would, when used as a coating, protect copper from corrosion
even after the coating was punctured? Select all that apply.
nickel (Ni)
iron (Fe)
iodine (I2)
O silver (Ag)
O chromium (Cr)
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- According to Standard reduction potentials table on page 164 (OLI), which of the following metals would reduce Sn (tin) from its solution? Sn+2 + 2e Sn O Au (gold) O Fe (Iron) O Pb (lead) O Cu (copper)arrow_forwardcalculate the amount of energy required to make 235 g of aluminum at a smelting temperature of 658°Carrow_forwardThe Fe2+Fe2+ (55.84555.845 g/mol) content of a 2.2472.247 g steel sample dissolved in 50.0050.00 mL of an acidic solution was determined by tiration with a standardized 0.1200.120 M potassium permanganate (KMnO4KMnO4, 158.034158.034 g/mol) solution. The titration required 29.2929.29 mL to reach the end point. What is the concentration of iron in the steel sample? Express your answer as grams of FeFe per gram of steel. MnO−4+8H++5Fe2+↽−−⇀Mn2++5Fe3++4H2OMnO4−+8H++5Fe2+↽−−⇀Mn2++5Fe3++4H2O concentration: g Fe/g steel (please type answer not write by hend)arrow_forward
- Answer the four questions below related to the spontaneous redox reaction that occurs whenCr(OH)3(s) reacts with NO3–(aq) to produce CrO42–(aq)and NO2–(aq) under basic conditions. Write the balanced net ionic equation, including states of matter, for the overall reaction.arrow_forwardAs2O3(s) + NO3- (aq) → H3AsO4(aq) + N2O3(aq) Identify the oxidizing agent. Identify the reducing agent. Balance the overall reaction in acidic media.arrow_forwardBalance the reaction of copper plus nitrate to yield copper (II) and nitrogen dioxide. This reaction occurs in acidic solution. Cu + NO3- -------> Cu2+ + NO2 Cu(NO3)2 + 4 H+--------> Cu + 2 NO2 + 2 H2O 2 Cu2+ + 4 H2O + 2 NO2 --------> Cu + 2 NO3- + 8 H+ 10 HCl + 5 Cu + 2 NaNO3 --------> 5 CuCl2 + 2 NaNO2 + 2 H2O Cu + 4 H+ + 2 NO3- --------> Cu2+ + 2 NO2 + 2 H2Oarrow_forward
- Based on the cell diagram, Au( s) | Au 2+( aq) || O 2( g) | H +( aq) | H 2O( l ) | Pt( s), which statement below is FALSE? a.The reaction occurs under acidic conditions. b.Au is oxidized at the anode. c.H+ is oxidized at the anode. d.O2 is reduced at the cathode. e.Four moles of electrons are transferred in the balanced redox reaction.arrow_forwardBalance the following redox equation to its lowest integer ratio. (Under Acidic Conditions) Te(s) + Ru(NO3)3(aq) + NO2(g) ↔ Ru2Te3(s) + HNO3(aq) Note that H2O and H+ are not shown in the equation above. If it is required to balance the equation, then add these.Fill in the coefficient for each chemical after you finish balancing the equation. If the chemical is not needed in the equation then mark a zero next to it Te(s) HNO3(aq) H2O(l) Ru2Te3(s) NO2(g) Ru(NO3)3(aq) H+ (aq)arrow_forwardIf a 6.0 Amp current is used, calculate the number of hours needed to prepare 22.0 grams of calcium metal from calcium ion. The reduction potential is -2.39 Varrow_forward
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