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(a) Acids dissolve in water and produce positively charged ions. Draw the structure of these positive ions. (b) Explain why Carbon tetrachloride does not dissolve in water. (c) Elements Q and S react together to form an ionic compound. Under normal conditions, which physical state will the compound QS exist in ? (d) Can Q and S, both be metals ? Justify your answer. (e) The property which is characteristic of an electrovalent compound is that : A. it is easily vaporized, B. it has a high melting point, C. it is a weak electrolyte, D. it often exists as a liquid. (f) When a metal atom becomes an ion : A. it loses electrons and is oxidized, B. it gains electrons and is reduced, C. it gains electrons and is oxidized, D. it loses electrons and is reduced. |
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Answer» (a) Acids dissolve in water and produce positively charged ions. Draw the structure of these positive ions. (b) Explain why Carbon tetrachloride does not dissolve in water. (c) Elements Q and S react together to form an ionic compound. Under normal conditions, which physical state will the compound QS exist in ? (d) Can Q and S, both be metals ? Justify your answer. (e) The property which is characteristic of an electrovalent compound is that : A. it is easily vaporized, B. it has a high melting point, C. it is a weak electrolyte, D. it often exists as a liquid. (f) When a metal atom becomes an ion : A. it loses electrons and is oxidized, B. it gains electrons and is reduced, C. it gains electrons and is oxidized, D. it loses electrons and is reduced. |
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