CHM 111 Name Balancing Chemical Equations 1. Balance the following chemical equations. (3 points each) CaC₂ + _H₂O → _Ca
Posted: Sun Jul 10, 2022 4:17 pm
- Chm 111 Name Balancing Chemical Equations 1 Balance The Following Chemical Equations 3 Points Each Cac H O Ca 1 (30.77 KiB) Viewed 32 times
2. Write balanced equations for the following chemical reactions. (3 points each) a. Calcium hydroxide reacts with hydrochloric acid to form calcium chloride and water. b. Hydrosulfuric acid reacts with iron (III) hydroxide to form solid iron (III) sulfide and water. c. Sodium hydroxide reacts with copper (II) nitrate to form copper (II) hydroxide and sodium nitrate.
Stoichiometry 3. (a) When NaHCO3 is heated above 270°C, it decomposes to form sodium carbonate, water, and carbon dioxide. Write a balanced equation for the decomposition reaction of NaHCO3. (2 points) (a) Calculate the mass of Na₂CO3 produced from the decomposition of 30.0g of NaHCO3. (5 points) 4. A student reacts methane gas (CH4) with oxygen gas (O₂). (a) Write a balanced chemical equation for the reaction. (2 points) (b) Calculate the theoretical yield of H₂O if 8.0g of CH4 reacts with excess oxygen gas. (5 points) (c) What is the percent yield? (2 points)
5. The manufacture of aluminum includes the production of cryolite (Na3AlF6) from the following reaction: 6HF(g) +3NaAlO2 (s)→ Na3AlF6(s) +3H₂O(1) + Al2O3(s) (a) What mass of HF(g) is required to make 185g of Na3AlF6? (5 points) (b) How many liters of HF(g) are needed to produce 36.0g of Al₂O3? The density of HF (g) at 25°C is 1.15g/L. (5 points)