Question

why does a moist blue litmus turn red when it is kept on the mouth of test tube in which lead nitrate is heated​

Answer 1

Answer:

becase of acid and base

Explanation:

Answer 2

Explanation:

Heya mate

The answer is here

♢ When a moist blue litmus is kept in the mouth of test tube in which lead nitrate is kept because during this reaction one gas N20 ( Nitrogen dioxide ) and solid PbO ( Lead Oxide ) is formed and when it turns to red it shows that it is acid

Because only acid can change blue litmus to red