Question

7. What Happens when :-

(1) Magnesium is Burnt in the presence of oxygen and the product obtained is added to water.

(2) An add and a Base is reacted.

(3) blue litmus is added to Vineger.

(4) Lemon Juice is added to Baking soda. ​

Answer 1

Answer:

Explanation:

1. when magnesium burn in presence of oxygen it will form magnesium oxide. and when this product that is magnesium oxide reacts with water then it forms magnesium hydroxide

a) Mg +O2 -----------> magnesium oxide

b)MgO+H2O--------------->Mg(OH)2

2.I think when acid and base are reacted

when a acid reacts with a base then it forms salt and water. this reaction is called as neutralization reaction .

3. since vinegar is acidic in nature hence it will turn blue litmus to red .

4. since lemon juice is acidic in nature hence when it reacts with baking soda that is NaHCO3  then salt , water and carbon dioxide gas is evolved.

(Metal carbonates/metal bicarbonates react with acids to produce salt, carbon dioxide and water.)