Question

tell this questions.....??????????​

Answer 1

Answer:

◆ Why should a magnesium ribbon be cleaned before burning in air?

A magnesium ribbon should be cleaned before burning in air because, it develops a layer of magnesium carbonate.

◆ Write a balanced chemical equation for the following-

$\rm (1)\ Hydrogen+Chlorine \implies Hydrogen Chloride \\ \rm H_2+Cl_2 \implies 2HCl\\ (2)\ \rm Barium\ Chloride+ Aluminium\ Sulphate \implies Barium\ Sulphate+Aluminum\ Chloride\\ \rm 3BaCl_2+Al_2(SO_4)_3 \implies 3BaSO_4+2AlCl_3\\ (3)\ \rm Sodium+Water \implies Sodium\ Hydroxide+Hydrogen\\ \rm 2Na+2H_2O \implies 2NaOH+H_2$

◆ Write a balanced chemical equation with state symbols for the following reactions-

(1) Solutions of barium chloride and sodium sulphate in water reacts to give insoluble barium sulphate and the solution of sodium chloride.

$\rm BaCl_2(aq)+Na_2SO_4(aq) \implies BaSO_4(s)+2NaCl(aq)$

(2) Sodium hydroxide solution (in water) reacts with hydrochloric acid solution (in water) to produce sodium chloride solution and water.

$\rm NaOH_2(aq)+HCl(aq) \implies NaCl(aq)+ H_2O(l)$

Answer 2

◆ Why should a magnesium ribbon be cleaned before burning in air?

• A magnesium ribbon should be cleaned before burning in air because, it develops a layer of magnesium carbonate.

◆ Write a balanced chemical equation for the following-

$\rm (1)\ Hydrogen+Chlorine \implies Hydrogen Chloride \\ \rm H_2+Cl_2 \implies 2HCl\\ (2)\ \rm Barium\ Chloride+ Aluminium\ Sulphate \implies Barium\ Sulphate+Aluminum\ Chloride\\ \rm 3BaCl_2+Al_2(SO_4)_3 \implies 3BaSO_4+2AlCl_3\\ (3)\ \rm Sodium+Water \implies Sodium\ Hydroxide+Hydrogen\\ \rm 2Na+2H_2O \implies 2NaOH+H_2$

◆ Write a balanced chemical equation with state symbols for the following reactions-

(1) Solutions of barium chloride and sodium sulphate in water reacts to give insoluble barium sulphate and the solution of sodium chloride.

$\rm BaCl_2(aq)+Na_2SO_4(aq) \implies BaSO_4(s)+2NaCl(aq)$

(2) Sodium hydroxide solution (in water) reacts with hydrochloric acid solution (in water) to produce sodium chloride solution and water.

$\rm NaOH_2(aq)+HCl(aq) \implies NaCl(aq)+ H_2O(l)$