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Question
What is the pH of a solution prepared by dissolving 0.15 gram of solid CaO (lime) in enough water to make 2.00 L of aqueous Ca(OH)2 (limewater)?
CaO(s) + H2O(l) -> Ca2+(aq) + 2 OH-(aq)
A) 2.57
B) 2.87
C) 11.13
D) 11.43
Answer
This answer is hidden. It contains 1 characters.
Related questions
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In the following picture of an oxide, darkly-shaded spheres represent oxygen atoms or ions and lightly-shaded spheres represent atoms or ions of a third-row element in its highest oxidation state. Tell whether the oxide is covalent or ionic and whether the oxide is acidic or basic. A) covalent and acidic
B) covalent and basic
C) ionic and acidic
D) ionic and basic
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B) element B
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The following pictures represent binary hydrides, AHx, where A = Na, Ti, C, or Cl. Lightly-shaded spheres represent H atoms or ions and darkly-colored spheres represent atoms or ions of element A.Which hydride has the lowest melting point?A) hydride (1)B) hydride (2)C) hydride (3)D) hydride (4)
Q:
When 3.600 grams of anhydrous magnesium chloride were exposed to moist air, water was absorbed by the sample. If the resulting hydrated compound has a mass of 4.962 grams, what is the chemical formula of the hydrate?
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Q:
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Which transition metal hydride is commonly used in the purification of hydrogen gas?
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Covalent hydrides of the type MH3 are likely to form with elements of what group?
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Q:
Chromium can be electroplated from an aqueous solution containing sulfuric acid and chromic acid, H2CrO4. What current is required to deposit chromium at a rate of 1.25 g/min?
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A steel pipe can be protected from corrosion by attaching the pipe to a piece of magnesium because
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Which of the following statements concerning the rusting of iron is false?
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