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Question
Copy and complete the following table:
| Column 1 | Column 2 | Column 3 |
| Substance reacted with acid | Dilute or concentrated acid | Gas |
| Hydrogen | ||
| Carbon dioxide | ||
| Only chlorine |
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Solution
| Column 1 | Column 2 | Column 3 |
| Substance reacted with acid | Dilute or concentrated acid | Gas |
| Zinc | Dilute sulphuric acid | Hydrogen |
| Calcium carbonate acid | Concentrated sulphuric acid | Carbon dioxide |
| Bleaching power (CaOCl2) | Dilute sulphuric acid | Only chlorine |
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