Mg + 2 HCl -> MgCl2 + H2. If a chemist uses 20 g Mg and 20 g HCl, what is the limiting reactant? What mass of the excess reactant is leftover when the reaction is complete?
1. Precipitation reaction given two reactants containing appropriate cations and anions, predict the product solid (precipitate) and the soluble second product. Write a balanced molecular equation, a complete ion ic equation, and/or a net ionic equation for the reaction. a.) MgC12 _NaOH b.) Pb(NO3)2_K2SO4 2. Mg 2 HCI MgCl2 H2. If a chemist uses 20 g Mg and excess HCI, what mass of MgC12 product would form? 3. Mg + 2 HCI MgC12 H2. If a chemist uses 20 g...
1. Given the equation: Mg + 2 HCl → MgCl2 + H2 . How many moles of H2 is produced when one mole of Mg is reacted with HCI? Select one: A. One mole of H2 B. Two moles of H2 2. The vapor pressure of water at 23.0°C is 21.0 mm Hg, what is the vapor pressure of water in atmosphere? Select one: A. 0.0276 B. 0.03
Additional Exercise 14.78 For the equation below: Mg(s) + 2 HCl(aq) MgCl2(aq) + H2(g) (a) How many moles of hydrogen will be liberated from 137.1 mL of 4.84 M HCl reacting with an excess of magnesium? mol H2 the tolerance is +/-2% (b) How many liters of hydrogen gas (H2) measured at 37 °C and 710 torr will be obtained? L H2 the tolerance is +/-2%
Consider the following balanced chemical equation. Mg(s) + 2 HCl(aq) → MgCl2 (aq) + H2 (8) When 61.42 mL of 1.44 M HCl reacts at 1.14 atm and 315 K, what volume (in L) of H2 forms?
Consider the following reaction: 2 HCl(aq) + 1 Mg(s) → 1 MgCl2(aq) + 1 H2(g) ΔH°rx = -465.8 kJ Determine the amount of heat released, in kJ, of each of the following scenarios. Give each answer to 2 decimal places. (a) 10.69 g of Mg(s) is reacted with excess HCl(aq)· (c) 1.17 g of H2(g) is produced from the reaction after completion. (b) Excess Mg(s) is added to 440 mL of 0.996 M of HCl(aq)· (d) 580 mL of a...
Consider the following reaction: Mg (s) + 2 HCl (aq) → MgCl2 (aq) + H2 (g) ΔHrxn = –4.6 × 102 kJ a. Is this reaction endothermic or exothermic? Circle one. [1] b. How much heat is evolved when 1.37 g of Mg are dissolved in excess HCl? [5] c. If 1.37 g of Mg are dissolved in enough HCl to make 250.0 mL of solution in a coffee-cup calorimeter, what is the final temperature of the solution? (Assume density...
4. Answer the following questions for the reaction below Mg (s) + HCl (aq)MgCl2 (aq) + H2(g) Balance the equation (SHOW YOUR WORK FOR FULL CREDIT!) (10 pts) a. Macla N S0, ->Mgcl2+H2 What type of reaction is this? (4 pts) b. Stugle 4 What are the oxidation states of: (4 pts/each) c. Reactants Products Mg H+2Y9 Mg+2 H+2 CL 6f CI What is being oxidized, what is being reduced? (5 pts/each) d. My oxidized vecaue it gives cl W...
Calculate the following using the stoichiometry of this reaction. Mg + 2HCl --> H2 + MgCl2 a) How many grams of HCl (Molar Mass = 36.46 g) are required to react with 44.44 g of Mg (Molar Mass = 24.31 g)? b) How many grams of MgCl2 (Molar Mass = 95.21 g) can be made from 44.44 g of Mg?
6. Metallic Mg reacts with hydrochloric acid according to the following equation: Mg(s) + 2 HCl (aq) → MgCl2 (aq) + H2(g) The enthalpy change associated with this reaction can be determined with an ice calorimeter. If 14.71 g of ice are melted when 0.2649 g of Mg reacts with excess hydrochloric acid, what is AH (in kJ/mol Mg) for the reaction written above? The heat of fusion of ice is 333 J/g.