Question

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Answer 1

Answer:

Answer :

➡ Zinc reacts with dilute sulphuric acid to produce hydrogen gas (H2) and zinc sulphate.

Chemical reaction and equation :

• Zn + H2SO4 = ZnSO4 + H2

➡ When dilute hydrochloric acid reacts with sodium carbonate, then sodium chloride, carbon dioxide and water are formed.

When solutions of sodium carbonate and hydrochloric acid are mixed, the equation for the hypothetical double displacement reaction is :

• Na2CO3 + 2 HCl → 2 NaCl + H2CO3

Bubbles of a colorless gas are evolved when these solutions are mixed.

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Answer 2

Answer:

1.

1. Sulphuric acid = H₂SO₄
2. Caustic soda = NaOH.
3. Slaked lime = Ca(OH)₂
4. Lime stone = CaCO3
5. Quick lime = Cao.

2.

1. Zinc reacts with dilute sulphuric acid to produce hydrogen gas (H 2) and zinc sulphate.
2. When dilute hydrochloric acid reacts with sodium carbonate, then sodium chloride, carbon dioxide and water are formed.
3. The reaction of Nitric acid and Sodium hydroxide represents a net ionic equation involving a strong acid and strong base. ... HNO3 + NaOH = NaNO3 + H2O is a neutralization reaction (also a double displacement reaction). The strong acid (HNO3) and strong base react to produce a salt (NaNO3) and water (H2O).
4. A metal reacts with an acid to produce a salt and hydrogen gas. Here, sodium reacts with dilute nitric acid to give sodium nitrate (salt) and hydrogen gas.
5. One molecule of Sulphuric Acid and one molecule of Calcium Hydroxide will react to give one molecule of Calcium Sulphate and two molecules of Water. FYI- Calcium Hydroxide is a base and Sulphuric acid is an acid. Whenever an acid reacts with a base, a salt is formed along with water molecules.

Step-by-step explanation:

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