Homework Answers
Hydrometallurgy involves the use of liquid processes such as leaching, extraction and precipitation for the recovery of metals from ores and ore concentrates. Here in the second equation we can observe that Copper Sulphate Pentahydrate has been treated with Water to produce Copper Sulphide which can be leached and can further produce pure Copper. So the second option is correct.
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Question 19 Which of the following is an example of a hydrometallurgical process? A1203-nH2O(s) + 2...
+ Question Details Which of the following chemical equations is NOT balanced? O O O 2...
+ Question Details Which of the following chemical equations is NOT balanced? O O O 2 NaOH(aq) + H2SO4(aq) → Na2SO4(aq) + 2 H2O(/) 3 H2SO4(aq) + 2 Al(OH)3(s) → 3 H2O() + Al2(SO4)3(aq) H3PO4(aq) + Al(OH)3(s) → 3 H2O(/) + AlPO4(s) 2 C6H1404(s) + 15 O2(g) → 14 H2O(g) + 12 CO2(g) + Question Details Which elements are gases at room temperature? Helium Chlorine Mercury Neon Aluminum Calcium Oxygen Tin
9. Based on the solubility rules, which one of the following compounds should be insoluble in...
9. Based on the solubility rules, which one of the following compounds should be insoluble in water? A) Na SO B) BaSO C) CuSO. D) MgSO E) Rb SO 10. Identify the reducing agent in the following chemical reaction. Cd + NiO2 + 2H2O → Ca(OH)2 + Ni(OH)2 A) Cd B) NiO2 c) H2O D) Ca(OH)2 E) Ni(OH)2 11. The oxidation number of Cl in CIO, is A) -1 B) +7 C) +5 D) +3 E) None of the above....
Which reaction is an example of an acid-base reaction? O FeCl3 (aq) + 3 KOH(aq) -...
Which reaction is an example of an acid-base reaction? O FeCl3 (aq) + 3 KOH(aq) - Fe(OH)3 (s) + 3 KCl(aq) O 2 Hg(1) + O2(g) -2 HgO(s) O 6 HCl(aq) + 2 Al(s) -> 2 AlCl3 (aq) + 3 H2 (g) O H2SO4 (aq) + Ca(OH)2 (aq) - CaSO4 (aq) + 2 H2O(l) H2CO3 (aq) - H2O(l) + CO2 (g)
can you please explain the answers 9. Based on the solubility rules, which one of the following compounds should be...
can you please explain the answers
9. Based on the solubility rules, which one of the following compounds should be insoluble in water? A) Na2SO4 B) BaSO4 C) CuSO4 D) MgSO4 E) Rb2SO4 10. Identify the reducing agent in the following chemical reaction. Cd + NiO2 + 2H2O → Ca(OH)2 + Ni(OH)2 A) Cd B) Ni02 C) HO D) Ca(OH)2 E) Ni(OH)2 11. The oxidation number of Cl in CIO3 is A) -1 B) +7 D) +3 E) None of...
Aluminum hydroxide reacts with sulfuric acid as follows: 2Al(OH)3(s)+3H2SO4(aq)→Al2(SO4)3(aq)+6H2O(l) Which reagent is the limiting reactant when...
Aluminum hydroxide reacts with sulfuric acid as follows: 2Al(OH)3(s)+3H2SO4(aq)→Al2(SO4)3(aq)+6H2O(l) Which reagent is the limiting reactant when 0.550 mol Al(OH)3 and 0.550 mol H2SO4 are allowed to react? Al2(SO4)3(aq) Al(OH)3(s) H2O(l) H2SO4(aq)
Determine which of the following chemical equations are correctly balanced. Fe2O3(s)+CO(g)→2Fe(s)+CO2(g) Al2S3(s)+H2O(l)→2Al(OH)3(s)+3H2S(g) 2Cr(s)+3O2(g)→Cr2O3(s) SiO2(s)+4HF(aq)→SiF4(g)+2H2O(l)
Determine which of the following chemical equations are correctly balanced. Fe2O3(s)+CO(g)→2Fe(s)+CO2(g) Al2S3(s)+H2O(l)→2Al(OH)3(s)+3H2S(g) 2Cr(s)+3O2(g)→Cr2O3(s) SiO2(s)+4HF(aq)→SiF4(g)+2H2O(l)
lructions Ondus LockDown! Question 19 Which of the following represents an acid-base neutralization reaction? SO2(g) +...
lructions Ondus LockDown! Question 19 Which of the following represents an acid-base neutralization reaction? SO2(g) + H20(1) -- H2SO3(8) OLIOH(aq) + HNO3(aq) --- LINO3(aq) + H20(1) 2KBr(aq) + Ciz() - 2Cl(aq) + Br20) CaBrzlag) + H250 lag) - CaSO4(s) + 2HBr(e) 2Al(s) + 3H_SO (ad) - Al2(SO4)3(aq) + 3H2(g) revious
Consider the following reaction at equilibrium: NiO(s)+CO(g) 2 Ni(s) + CO2(g). Select all of the following...
Consider the following reaction at equilibrium: NiO(s)+CO(g) 2 Ni(s) + CO2(g). Select all of the following that will shift the reaction to the left side. Addition of CO Removal of CO Addition of Ni Increase the volume. Removal of CO2 Addition of CO2 Removal of NIO Question 1 What is the expression for equilibrium constant for the following reaction? 2 H2S(g) + SO2(g) = 35(s) + 2 H2O(g) Kc= [HQ][S] [SO][H251 Kc= [HO] [502][H,872 Kc= [502] [H2 51 (H20 Kc=...
Use the values of AH; to calculate AF® for the following reactions. Substance and State AH(kJ/mol)...
Use the values of AH; to calculate AF® for the following reactions. Substance and State AH(kJ/mol) C2H5OH(1) -278 02(9) CO2(9) -393.5 H2O(9) -242 H2O(1) -286 Ticu (9) -736 TiO2(8) _945 H+ (aq) Cl(aq) -167 NiO(s) -241 Ni(OH)2(s) -538 0 + (g) - (g) + он до ос AH = kJ b. TiCl4 (9) + 2H20(1) + TiO2 (s) + 4HCl(aq) AH° = c. NiO(s) + H2O(l) + Ni(OH)2(s) AH° = kJ
15. Determine the net ionic equation for the following chemical reaction: NaOH(aq) + HCl(aq) ----------> NaCl(aq)...
15. Determine the net ionic equation for the following chemical reaction: NaOH(aq) + HCl(aq) ----------> NaCl(aq) + H20 hint: NaOH(aq) is strong base HCl(aq) is a strong acid OH-(aq) + H+ (aq) ----> H2O(1) 20H-(aq) + 2C1-(aq) -----> H2O(l) + C12(8) NaOH(aq) + CIO-(aq) -----> C12(g) + O2(g) + H2(g) + Na(s) H+(aq) + NaOH(aq)- H2O(1)+ Na(s) 13. A compound contains 20.24% Al and 79.76% Cl. Calculate the empirical formula. molar masses: Al = 26.98 g/mole and Cl = 35.45...
+ Question Details Which of the following chemical equations is NOT balanced? O O O 2 NaOH(aq) + H2SO4(aq) → Na2SO4(aq) + 2 H2O(/) 3 H2SO4(aq) + 2 Al(OH)3(s) → 3 H2O() + Al2(SO4)3(aq) H3PO4(aq) + Al(OH)3(s) → 3 H2O(/) + AlPO4(s) 2 C6H1404(s) + 15 O2(g) → 14 H2O(g) + 12 CO2(g) + Question Details Which elements are gases at room temperature? Helium Chlorine Mercury Neon Aluminum Calcium Oxygen Tin
9. Based on the solubility rules, which one of the following compounds should be insoluble in water? A) Na SO B) BaSO C) CuSO. D) MgSO E) Rb SO 10. Identify the reducing agent in the following chemical reaction. Cd + NiO2 + 2H2O → Ca(OH)2 + Ni(OH)2 A) Cd B) NiO2 c) H2O D) Ca(OH)2 E) Ni(OH)2 11. The oxidation number of Cl in CIO, is A) -1 B) +7 C) +5 D) +3 E) None of the above....
Which reaction is an example of an acid-base reaction? O FeCl3 (aq) + 3 KOH(aq) - Fe(OH)3 (s) + 3 KCl(aq) O 2 Hg(1) + O2(g) -2 HgO(s) O 6 HCl(aq) + 2 Al(s) -> 2 AlCl3 (aq) + 3 H2 (g) O H2SO4 (aq) + Ca(OH)2 (aq) - CaSO4 (aq) + 2 H2O(l) H2CO3 (aq) - H2O(l) + CO2 (g)
can you please explain the answers
9. Based on the solubility rules, which one of the following compounds should be insoluble in water? A) Na2SO4 B) BaSO4 C) CuSO4 D) MgSO4 E) Rb2SO4 10. Identify the reducing agent in the following chemical reaction. Cd + NiO2 + 2H2O → Ca(OH)2 + Ni(OH)2 A) Cd B) Ni02 C) HO D) Ca(OH)2 E) Ni(OH)2 11. The oxidation number of Cl in CIO3 is A) -1 B) +7 D) +3 E) None of...
lructions Ondus LockDown! Question 19 Which of the following represents an acid-base neutralization reaction? SO2(g) + H20(1) -- H2SO3(8) OLIOH(aq) + HNO3(aq) --- LINO3(aq) + H20(1) 2KBr(aq) + Ciz() - 2Cl(aq) + Br20) CaBrzlag) + H250 lag) - CaSO4(s) + 2HBr(e) 2Al(s) + 3H_SO (ad) - Al2(SO4)3(aq) + 3H2(g) revious
Consider the following reaction at equilibrium: NiO(s)+CO(g) 2 Ni(s) + CO2(g). Select all of the following that will shift the reaction to the left side. Addition of CO Removal of CO Addition of Ni Increase the volume. Removal of CO2 Addition of CO2 Removal of NIO Question 1 What is the expression for equilibrium constant for the following reaction? 2 H2S(g) + SO2(g) = 35(s) + 2 H2O(g) Kc= [HQ][S] [SO][H251 Kc= [HO] [502][H,872 Kc= [502] [H2 51 (H20 Kc=...
Use the values of AH; to calculate AF® for the following reactions. Substance and State AH(kJ/mol) C2H5OH(1) -278 02(9) CO2(9) -393.5 H2O(9) -242 H2O(1) -286 Ticu (9) -736 TiO2(8) _945 H+ (aq) Cl(aq) -167 NiO(s) -241 Ni(OH)2(s) -538 0 + (g) - (g) + он до ос AH = kJ b. TiCl4 (9) + 2H20(1) + TiO2 (s) + 4HCl(aq) AH° = c. NiO(s) + H2O(l) + Ni(OH)2(s) AH° = kJ
15. Determine the net ionic equation for the following chemical reaction: NaOH(aq) + HCl(aq) ----------> NaCl(aq) + H20 hint: NaOH(aq) is strong base HCl(aq) is a strong acid OH-(aq) + H+ (aq) ----> H2O(1) 20H-(aq) + 2C1-(aq) -----> H2O(l) + C12(8) NaOH(aq) + CIO-(aq) -----> C12(g) + O2(g) + H2(g) + Na(s) H+(aq) + NaOH(aq)- H2O(1)+ Na(s) 13. A compound contains 20.24% Al and 79.76% Cl. Calculate the empirical formula. molar masses: Al = 26.98 g/mole and Cl = 35.45...
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