**Laboratory Procedure: Determining the Molar Mass of an Unknown Element****Apparatus Setup**- The diagram shows a filtration setup where a solution is poured through a funnel containing filter paper, allowing the filtrate to collect in a beaker below.**Procedure**1. **Dry the filter paper and silver chloride (AgCl)** and weigh it.**Data Collected:**- Mass of XCl₂: 0.2455 g- Mass of filter paper + watch glass: 22.6541 g- Mass of filter paper + watch glass + solid AgCl: 23.3934 g**Objective:**- Determine the mass of AgCl (s).**Calculations:**1. **Balance the Chemical Equations** - Begin by balancing the relevant chemical equations that involve the formation of AgCl.2. **Perform the Following Calculations:** - **Determine the moles of AgCl:** - Convert the mass of AgCl obtained from the difference in initial and final masses to moles using its molar mass. - **Relate moles of AgCl to moles of XCl₂:** - Assume a stoichiometric relationship from the balanced equation to find moles of XCl₂ from moles of AgCl. - **Calculate the molar mass of XCl₂ in g/mole:** - Use the mass and moles of XCl₂ to find its molar mass. - **Determine the molar mass of X:** - Subtract the known mass of Cl₂ from the molar mass of XCl₂ to find the molar mass of the unknown element X.3. **Identify the Unknown Element:** - Compare the calculated molar mass of X with values on the periodic table to identify the unknown element. **Determination of an Unknown Element X by the Following Stoichiometry Reaction:**\[ \text{XCl}_2 \, (\text{aq}) + \text{AgNO}_3 \, (\text{aq}) \rightarrow \text{AgCl} \, (\text{s}) + \text{X(NO}_3)_2 \]**Procedure and Data:**1. Weigh a piece of weighing paper and tare the balance. Then add 0.2455 g of XCl\(_2\).2. Transfer the weighed XCl\(_2\) to a beaker.3. Add 75.0 mL of 0.100 M AgNO\(_3\) aqueous solution using a graduated cylinder.4. An AgCl white solid will form.5. Weigh a filter paper and a watch glass, then set up the filtration according to the following diagram:**Diagram Description:**The diagram depicts a filtration apparatus setup. Here's the breakdown:- A ring clamp is attached to a stand supporting a funnel.- The funnel is placed above a conical flask to collect the filtrate.- The entire setup is situated on a flat surface or tray to prevent spillage.**Next Step:**Filter the heterogeneous mixture and collect all AgCl(s) on the filter paper.

The unknown element X is Mg (Magnesium)

Dry the filter paper + AgCl(s) and weigh it. The following data is obtained : a. Mass of XCl2 : 0.2455 g b. Mass of filter paper + watch glass: 22.6541 g c. Mass of filter paper + watch glass + solid AgCl = 23.3934 g d. Mass of AgCI (s) : Calculations: Balance the above chemical equations Perform the following calculations : g of AgCl(s) --- moles of AgCl - moles of XCl, - molar mass of XCl - compare the molar mass of X with the periodic table to find the unknown element Х. -→ moles of AgCl → moles of XCI2 -→ molar mass of XC12 in g/ mole -→ molar mass of X

Dry the filter paper + AgCl(s) and weigh it. The following data is obtained : a. Mass of XCl2 : 0.2455 g b. Mass of filter paper + watch glass: 22.6541 g c. Mass of filter paper + watch glass + solid AgCl = 23.3934 g d. Mass of AgCI (s) : Calculations: Balance the above chemical equations Perform the following calculations : g of AgCl(s) --- moles of AgCl - moles of XCl, - molar mass of XCl - compare the molar mass of X with the periodic table to find the unknown element Х. -→ moles of AgCl → moles of XCI2 -→ molar mass of XC12 in g/ mole -→ molar mass of X

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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