Substances are given: water, sulfuric acid, sulfur oxide (4), zinc hydroxide, copper. Which of these substances

| July 7, 2021 | education

Substances are given: water, sulfuric acid, sulfur oxide (4), zinc hydroxide, copper. Which of these substances will interact with sodium sulfate? Write the equations of the corresponding reactions.

1. Since sodium sulfate Na2SO4 is a salt of a strong base (NaOH sodium hydroxide) and a strong acid (sulfuric acid, about two es about four, H2SO4) does not undergo hydrolysis, the reaction with water is impossible.

2. Na2SO4 + H2SO4 = 2NаНSO4 (sodium hydrogen sulfate)

Sodium sulfate is a white solid whose crystals melt and boil without decomposition.

3. Acidic oxide sulfur dioxide, (es about two) SO2 is a weak acid oxide, it will not be able to displace the sulfate of the strongest sulfuric acid. The reaction will not work.

4. Zinc hydroxide Zn (OH) 2 – insoluble hydroxide, white powder. For the reaction between hydroxide and salt to take place, the following conditions must be met:

a) the starting materials must be soluble.

b) as a result of the reaction, gas should be released or a precipitate should form.

Zinc hydroxide (Zn (OH) 2) is insoluble. The first condition is not met. the reaction will not work.

5. Cu- copper or copper. Metal can be displaced from the salt if it is to the left of the metal in the salt, look at the activity scale. Cu is to the right of Na means less active and will not displace Na from salt. The reaction will not work.



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