Reaction VII - Calcium Metal and Water Add the formulas for the reactants, and balance the equation. + → ? Ca(OH)2 + ? H2
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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 a 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.
Sri K.
Few grains of calcium metal is combined with few drops of water. Chemical Formula for Predicted Product: Ca(OH)2(aq) Predicted Product: Calcium hydroxide Type of Reaction: 1. Acid-base 2. Gas producing 3. Metathesis 4. Redox 5. No reaction If more than one, write the numbers sequentially. Evaluate: At least one of these is incorrect:
David C.
Calcium metal is moderately reactive. If pieces of calcium are added to water, the metal begins to bubble as hydrogen gas is formed. The water begins to turn cloudy as solid calcium hydroxide begins to form. Write the unbalanced chemical equation for the reaction of calcium metal with water.
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