Write balanced chemical equations for each of the following and then classify each reaction as a synthesis, decomposition, single-replacement, double replacement, acid-base reaction, or combustion. The balanced chemical equation is: CaO + H 2 O → Ca OH 2 + Excess heat Calcium Oxide Water Calcium hydroxide (b) Zinc reacts with dil. The Old Thermodynamist says: H2(g) + CuO = Cu + H2O(l) Change in Free Energy: ΔG(20C) = -149.9kJ (negative, so the reaction runs) Change in Enthalpy: ΔH(20C) = -143.1kJ (negative, so the reaction is exothermic) 6. Convert moles Cu to grams Cu with the atomic weight of Cu. 2a Symbol Equation Q's * 2b Symbol Equation Q'n Answers. When the funnel is removed from the hydrogen stream, the copper was still be warm enough to be oxidized by the air again. b. (b)lime-stone is heated ? c. Sulfur dioxide gas reacts with oxygen gas to form sulfur trioxide gas. (b) A balanced and an unbalanced chemical equation. Zn + HCl → ZnCl 2 + H 2 Cu + HCl → No reaction. Zinc is above hydrogen whereas copper is below hydrogen in the activity series of metals. moles = 79.5 / 79.5 = 1. c) when heated in atmosphere of nitrogen, lithium forms lithium nitride. Which of the following is the balanced synthesis equation if copper has a charge of +1? A black solid, it is one of the two stable oxides of copper, the other being Cu 2 O or copper(I) oxide (cuprous oxide). The balanced equation is written as: 2Al + 3CuSO4 --> Al2(So4)3 + 3Cu An oxidation-reduction reaction occurs where there is a transfer of elections from Aluminum to oxide Copper. The solid formed is copper. 1) The reaction between carbon and copper(II) oxide when heated together with a bunsen burner flame 2) The reaction between hydrogen and hot lead(II) oxide Thanks! Solid iron(III) oxide reacts with hydrogen gas to form solid iron and liquid water. Solid copper reacts with solid sulfur to form solid copper(I) sulfide. Relevance. 7. Ex- H 2 + Cl 2 → HCl; Unbalanced chemical An equation in which the numbers of atoms of each element on the two sides of the equation is equal is called balanced chemical equation. nitric acid to form zinc nitrate along with the evolution of nitrous oxide. Write a balanced chemical equation for each reaction. Exercise | Q 11.2. When hydrogen gas is passed over this heated substance, a visible change is seen in it. WORD EQUATION QUESTION ANSWERS. When magnesium reduces hot copper(II) oxide to copper, the ionic equation for the reaction is: ... Balance the hydrogens by adding hydrogen ions. Write balanced equation for the following reactions described in words. Reacting Copper Oxide with Sulphuric Acid. As a mineral, it is known as tenorite. Balanced chemical. Hydrogen is more reactive than copper because hydrogen displaced copper to form water. Find the moles of Copper oxide. Examples: Fe, Au, Co, Br, C, O, N, F. Ionic charges are not yet supported and will be ignored. Question 16: What type of chemical reactions take place when : (a) a magnesium wire is burnt in air ? Write the balanced chemical equation for each reaction.a. c. Sulfur dioxide gas reacts with oxygen gas to form sulfur trioxide gas. Your teacher is expecting you to write: Cu2O + H3PO4 --> Cu3PO4 + H2. Solid iron (III) oxide reacts with hydrogen gas to form solid iron and liquid water. Apparatus . Write the balanced chemical equation for this reaction and state (i) the substance oxidized and (ii) the substance reduced in the reaction. When hydrogen gas is passed over heated copper (II) oxide, copper and steam are 2 formed. A balanced chemical reaction is the one in which the number of atoms of each element on the reactant side is equal to the number of atoms of that element on the product side. Use uppercase for the first character in the element and lowercase for the second character. a) Pentane burns in oxygen to form carbon dioxide and water. Solid iron(III) oxide reacts with hydrogen gas to form solidiron and liquid water.c. Copper(II) oxide or cupric oxide is the inorganic compound with the formula CuO. Step three ===== Find the moles of Cu. 1 decade ago . Molar mass CuO. VIEW SOLUTION. Heated copper metal reacts with oxygen to form the black copper oxide. That is why zinc displaces hydrogen from dilute hydrochloric acid, while copper does not. Write the balanced chemical equation for this reaction and state (i) the substance oxidized and (ii) the substance reduced in the reaction. Copper(II) oxide can be reduced by hydrogen and its formula determined. Write a balanced chemical equation for each reaction. 4. copper(II) oxide + hydrogen → copper + water CuO + H 2 → Cu + H 2 O 5. Write a balanced chemical equation for this reaction. Replace immutable groups in compounds to avoid ambiguity. b. 1a Original Word Equation Q's. 3. 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