Mg(s) + 2 HCl(aq) H2(g) + MgCl2(aq) (2) This problem to be done with Gas Laws...
Mg metal reacts with HCl to produce hydrogen gas. Mg(s)+2HCl(aq)→MgCl2(aq)+H2(g) How many grams of magnesium are needed to prepare 6.90 L of H2 at 775 mmHg and 20 ∘C?
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 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...
Complete and balance the reaction below: Mg (s) + 2HCl (aq) → MgCl2 (aq) + H2 (s) How many moles of H2 gas will be produced from 2 mol of HCl ? 2HCl ---à H2 + Cl2 1 mol of H2 gas will be produced from 2 moles HCl. How would you determine the volume of a 125mL Erlenmeyer flask that you will use for the experiment? (a 125 mL flask does not have a total volume of 125 mL)...
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...
Mg metal reacts with HCl to produce hydrogen gas. Mg(s)+2HCl(aq)→MgCl2(aq)+H2(g) What volume of hydrogen at 0 ∘C and 1.00 atm (STP) is released when 9.40 g of Mg reacts?
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?
In the reaction of magnesium metal with hydrochloric acid: Mg(s) + 2HCl(aq) --> MgCl2(aq) + H2(g) What evidence of reaction would you see based on this balanced reaction? The solution cools down Solid formation Bubbles form in solution A color change In the lab, a student measures a teaspoon of an unknown liquid. The teaspoon of liquid has a mass of 6.84 g and a volume of 4.48 ml. How many teaspoons would be in 1.77 kg of this unknown...
Using the equation: Mg(s) + 2HCl(aq) ———> H2(g) + MgCl2(aq), complete the worksheet. Prelab Questions . A student following the procedures in this lab exercise collected the following data: mass Mg, g 0.0243 initial syringe volume, mi 0.8 final syringe volume, ml 26.3 barometric pressure, tor 748 temperature, K 293.5 Calculate the value of the universal gas constant, R. 2. What would be the volume of hydrogen gas produced by the reaction of 0.100 g of magnesium metal, collected at...
Magnesium metal reacts with hydrochloric acid to give hydrogen gas. Mg + 2 HCl → MgCl2 + H2 Use the following reaction information to answer the subsequent questions. Show all of your work. 92 mm Length of Magnesium ribbon: Barometric Pressure: 762.9 mmHg Water Temperature: 29 °C Initial Gas Volume: 0.00 mL Final Gas Volume: 67.35 mL 0.7559 Mass = Length (in mm) x (1000 mm) 1. Magnesium is usually found in the laboratory as a ribbon strip. Find the...