Question

Which of these compounds when dissolved in water will turn blue litmus to red litmus:

a). Copper oxide
b) Sodium chloride
c) sulphur oxide
d) rust


So guys, this is the question. Please give the answer if you know correctly. Don't guess please. And give the answer somewhat fast. Its urgent ​

Answer 1

Answer:

Indicators are red in acids and blue in bases. In other words, acids change blue litmus paper to red; bases change red litmus paper to blue. MgO, K2O and ZnO are basic oxides while CO2 is the acidic oxide. So, the given acidic oxide of carbon, i.e., carbon dioxide turns blue litmus red.

Explanation:

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Answer 2

Answer:

option a ( copper oxide)

Explanation:

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