1. “ammonium molybdate(VI) tetrahydrate” is listed as a synonym for ammonium molybdate. What does the “VI”...
1. “ammonium molybdate(VI) tetrahydrate” is listed as a synonym for ammonium molybdate. What does the “VI” tell you about the compound?
2. When concentrated acid is added to a solution of sodium carbonate, bubbles form in the solution.
a. What is the identity of the gas produced?
b. Write a balanced net-ionic chemical equation that explains the formation of this gas.
Homework Answers
1. Ammonium molybdate consists of ammonium and molybdate ions which are in a 2:1 ratio. As it contains a molybdate it is as equal as poison. The chemical formula is (NH4)6MO7O24.4H2O. The number VI means that there are 6 NH4 ions in it
2. When concentrated acid such as hydrochloroc acid is added to a solution of sodium carbonate, carbonic acid is formed. As carbonic acid is an unstable compound, it decomposes into carbon dioxide and water. This carbon dioxide appears as bubbles in the solution.
a. Therefore the gas is carbon dioxide, which is colourless and is released when the solutions are mixed.
b. 2Na+ + CO32- + 2H+ + 2Cl- -> 2Na+ + 2Cl- + CO2 + H2O
Is the balanced net-ionic chemical equation, where the carbon dioxide gas formation can be seen.
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1. “ammonium molybdate(VI) tetrahydrate” is listed as a
synonym for ammonium molybdate. What does the “VI”...
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