LenSSLIY TUI 7. What is the enthalpy change when 75.0 grams of copper(II)oxide react according to...
The oxidation of copper(I) oxide, Cu, O(s), to copper(II)oxide, CuO(s), is an exothermic process. 2 Cu,C(s) + 0,(9) — 4 CuO(s) The change in enthalpy upon reaction of 50.70 g Cu, O(s) is -51.73 kJ. Calculate the work, w, and energy change, AUr, when 50.70 g Cu, O(s) is oxidized at a constant pressure of 1.00 bar and a constant temperature of 25 C. Note that A Er is sometimes used as the symbol for energy change instead of AU...
The oxidation of copper(I) oxide, Cu,O(s), to copper(II)oxide, CuO(s), is an exothermic process. 2 Cu, O(s) + O2(g) 4 CuO(s) kJ AH x = -292.0 mol Calculate the energy released as heat when 61.76 g Cu, O(s) undergo oxidation at constant pressure. KJ energy released:
A student started with 1.409 grams of copper (II) oxide and produced 3.500 g of copper (II) sulfate. What is the percent yield? The product is a hydrate. Use appropriate significant figures. Do not put a percent sign in the answer box. Please ignore extra zeros that will be automatically added to your answer by the system. Useful information: chemical equation: CuO(s) + H2SO4 (aq) ---> CuSO4 (aq) +H2O(l) Formula weight of hydrated copper (II) sulfate = 249.677 g/mol Formula...
How many moles of ammonia would be required to react exactly with 0.482 moles of copper(II) oxide in the following chemical reaction? 2 NH₃ (g) + 3 CuO (s) → 3 Cu (s) + N₂ (g) + 3H₂O (g)
What is the change in enthalpy for the reaction when 2.00 mol of iron(II)oxide, FeO, reacts to form Fe 3O 4( s)? 6FeO( s) + O2( g) 2Fe3O 4( s) ∆H rxn = - 635 kJ/mol rxn
REPORT SUMMARY (2pts) How many grams of copper (II) nitrate would be produced from 0.80 g of copper metal reacting with excess nitric acid? (5pts) Conversion 2 When copper (II) nitrate reacts with sodium hydroxide, blue-green copper (II) hydroxide and sodium nitrate (in solution) are produced. How many grams of copper (11) hydroxide, Cu(OH)2 can be prepared from 2.4 grams of copper (II) nitrate (Cu(NO3)2) and excess sodium hydroxide? (2pts) Write the balanced chemical equation Normal : BIILU X1 X1...
11 Question (3 points) See page 247 Copper has been used for thousands of years, either as a pure metal or in alloys. It is frequently used today in the production of wires and cables. Copper can be obtained through smelting or recycling. Determine the energy associated with each of these processes in order to recycle 145 mol Cu The smelting of copper occurs by the balanced chemical equation: Cuo(4) + CO(g) – Cu(s) + CO,(g) where AH cuois -155...
* 15.39 x - Question 7 (1 point) Manganese(II) oxide can react with oxygen to form manganeso(IV) oxide as shown below: 2 MnO(s) + O2(g) → 2 MnOz(s) & Hm - Art mg When 15.3 g of the manganese(II) oxide reacted, 26.9 kJ of heat energy was released. What is the molar enthalpy of reaction for the manganese(II) oxide 4. Hm Answer to 3 S.D. in kJ/mol. Make sure that you include a + or - sign with your answer...
Gas stoichiometry 1. Assume that 5.60 L of hydrogen gas at STP reacts with copper (II)oxide according to the following balanced equation: CuO (s) + H2(g) → Cu (s) + H20 (9) a. How many moles of H2 react? b. How many moles of copper are produced? c. How many grams of copper are produced? Partial pressure: 1. What is the total pressure exerted by a mixture of 2.00 g of H2(g) and 8.00 g of N2(g) at 273 K...
Question 4 (14 marks) Copper (II) sulphide can be reduced by hydrogen at high temperatures according to the equation Cus(s)+ H,(g)-Cus)+H,S(g) For the reaction above the standard reaction enthalpy is ArH 33.0 kJ mol1 and standard reaction entropy is ?,so-42.01 Calculate the molar composition of the output gas (hydrogen sulphide-hydrogen mixture) in equilibrium if the reaction is carried out at T- 700 K with an excess of CuS Assume that the solids (CuS and Cu) do not mix and are...