Our first metal is a chunk of solid calcium metal. When we place it in unheated distilled water, we observe a vigorous chemical reaction. Bubbles of hydrogen gas are created, the calcium dissolves, and the resulting solution tests as strongly basic (which tells us that hydroxide is now present at high concentration). We also place it in a highly acidic solution, and see a vigorous reaction there as well. Select a balanced ionic equation that describes the reaction in water, remembering that both mass and charge have to be balanced for a reaction to be correct. Ca(s) + 2 H2O(1) --> H2(g) + Ca2*(aq) + 2 OH'(aq) O Ca(s) + H2O(1) H2(g) + Ca2*(aq) + OH (aq) --> O Ca(s) --> H2(g) + Ca2*(aq) + 2 OH(aq) O Ca(s) + H2O(1) : --> 2 H(g) + Ca2*(aq) + O2 (aq) O Ca2*(s) + 2 H2O(1) --> H2(g) + Ca2+(aq) + 2 OH (aq)
Our first metal is a chunk of solid calcium metal. When we place it in unheated distilled water, we observe a vigorous chemical reaction. Bubbles of hydrogen gas are created, the calcium dissolves, and the resulting solution tests as strongly basic (which tells us that hydroxide is now present at high concentration). We also place it in a highly acidic solution, and see a vigorous reaction there as well. Select a balanced ionic equation that describes the reaction in water, remembering that both mass and charge have to be balanced for a reaction to be correct. Ca(s) + 2 H2O(1) --> H2(g) + Ca2*(aq) + 2 OH'(aq) O Ca(s) + H2O(1) H2(g) + Ca2*(aq) + OH (aq) --> O Ca(s) --> H2(g) + Ca2*(aq) + 2 OH(aq) O Ca(s) + H2O(1) : --> 2 H(g) + Ca2*(aq) + O2 (aq) O Ca2*(s) + 2 H2O(1) --> H2(g) + Ca2+(aq) + 2 OH (aq)
Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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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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Question
Transcribed Image Text:Our first metal is a chunk of solid calcium metal. When we place it in unheated
distilled water, we observe a vigorous chemical reaction. Bubbles of hydrogen gas
are created, the calcium dissolves, and the resulting solution tests as strongly basic
(which tells us that hydroxide is now present at high concentration).
We also place it in a highly acidic solution, and see a vigorous reaction there as
well.
Select a balanced ionic equation that describes the reaction in water, remembering
that both mass and charge have to be balanced for a reaction to be correct.
O Ca(s) + 2 H20(1) --> H2(g) + Ca2*(aq) + 2 OH(aq)
O Ca(s) + H20(1) --> H2(g) + Ca2+(aq) + OH (aq)
O Ca(s) --> H2(g) + Ca2*(aq) + 2 OH(aq)
O Ca(s) + H20(1)
--> 2 H(g) + Ca2+(aq) + O2 (aq)
Ca2"(s) + 2 H2O(1) --> H2(g) + Ca2*(aq) + 2 OH (aq)
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