According to the reaction,
1 unit of Mg gives 1 unit of H2 gas.
=> 0.0033 mol of Mg will give 0.0033 mol of H2 gas.
Now, 1 mol of H2 gas has a volume of 22.4 L.
So, 0.0033 mol of H2 gas has a volume of 22.4 × 0.0033 L
= 0.07392 L
and, Temperature = 28 ℃ = 301 K
Using the ideal gas equation,
PV = nRT
P = nRT/V
P = 0.0033 mol × 0.0821 L.atm/K/mol × 301 K / 0.07392L
P = (0.0033 × 0.0821 × 301) ÷ 0.07392 atm
P = 0.08155 ÷ 0.07392 atm = 1.10 atm.
You have the following reaction: Mg(s) + 2 HCl(aq) + Mg2+(aq) + H2(g) + 2Cl(aq). Answer...
#4 please All information needed to complete this worksheet can be found in the pre-lab information and calculations sections of the lab manual. Read this introductory material first Record all values with the correct number of significant figures and units. Place all answers on the line when provided. show calculations for any numerical answers' work must be shown to receive credit. See any 102 TA in the help office before your prelab is due if you have any questions. Each...
The balanced chemical reaction in this lab as follows: Mg (s) + 2 HCl (aq) à MgCl2 (aq) + H2 (g) The products formed are aqueous magnesium chloride and hydrogen gas. The products formed are hydrochloric acid and magnesium chloride. The products formed are magnesium metal and hydrochloric acid. The products formed are magnesium metal and hydrogen gas. The combine gas law is as follows: What happens to the volume of an ideal gas if you double its temperature at...
In the laboratory, hydrogen gas is usually made by the following reaction: Zn(s) + 2 HCl(aq) → H2(g) + ZnCl2(aq) How many liters of H2 gas, collected over water at an atmospheric pressure of 752 mm Hg and a temperature of 21.0°C, can be made from 1.566 g of Zn and excess HCl? The partial pressure of water vapor is 18.65 mm Hg at 21.0°C.
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 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...
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...
If 25.0 mL of 1.5 M HCl is combined with 0.11 g Mg, what volume of hydrogen gas can be produced? Assume the atmospheric pressure is 761.7 mmHg and temperature of solution is 28.6。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%
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?
Hydrogen gas is produced by the reaction between metallic aluminum and aqueous hydrochloric acid. 2Al(s)+6HCl(aq)⟶2AlCl3(aq)+3H2(g) The hydrogen gas produced by this reaction is typically collected via water displacement. During this process, the hydrogen gas becomes saturated with water vapor. If 281.7 mL of gas with a total pressure of 1.02 atm is collected via water displacement at 29.4 ∘C, what is the partial pressure of the hydrogen gas in the sample? The vapor pressure of water at 29.4 ∘C is...