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A moderately reactive metallic element (whose melting point is 850°C) burns in a container of a greenish gas (also an element) to produce a white solid. The white solid dissolves in water to form a clear solution. When carbon dioxide gas, CO 2 , is bubbled into this solution, it produces a white precipitate. Identify, by names and formulas, the substances referred to as the white solid and the white precipitate. Use a handbook of chemistry to obtain any data you may need.

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General Chemistry - Standalone boo...

11th Edition
Steven D. Gammon + 7 others
Publisher: Cengage Learning
ISBN: 9781305580343

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Chapter
Section
BuyFindarrow_forward

General Chemistry - Standalone boo...

11th Edition
Steven D. Gammon + 7 others
Publisher: Cengage Learning
ISBN: 9781305580343
Chapter 8, Problem 8.101QP
Textbook Problem
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A moderately reactive metallic element (whose melting point is 850°C) burns in a container of a greenish gas (also an element) to produce a white solid. The white solid dissolves in water to form a clear solution. When carbon dioxide gas, CO2, is bubbled into this solution, it produces a white precipitate. Identify, by names and formulas, the substances referred to as the white solid and the white precipitate. Use a handbook of chemistry to obtain any data you may need.

Interpretation Introduction

Interpretation:

The names, formula of the white solid and white precipitate have to be identified.

Explanation of Solution

Based on the given information the unknown element is alkaline earth metal and its present in group 2A highly reactive materials.  The referred metal melting point close to 850oC is Calcium.  The green gas Chlorine is treated Calcium to give Calcium chloride the physical form is white solid.

Ca(s)+Cl2(g)CaCl2(s)

Calcium chloride is completely dissociated into ions Ca2+ and Cl(aq)- when it’s added to water

CaCl2(s)+xH2OCa2++Cl(aq)-

When carbon dioxide gas, CO2(g) is bubbled into water, it forms a solution of carbonic acid

CO2(g)+H2O(l)H2CO3(aq)

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Chapter 8 Solutions

General Chemistry - Standalone book (MindTap Course List)
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