Question

Convert into balanced chemical equation. (1x4=4)

a) Magnesium + dil. Nitric acid Magnesium nitrate + Hydrogen

b) Chlorine + Potassium iodide Potassium chloride + Iodine

c) Acetic acid + Sodium bicarbonate Sodium acetate + Carbon dioxide

+Water

d) Calcium nitrate Calcium oxide + Nitrogen dioxide + Oxygen​

Answer 1

Magnesium metal reacts with dilute nitric acid to form magnesium nitrate and hydrogen gas.

$Mg+HNO 3 Mg(NO 3) +H 2(g)$

ANS; magnesium

chlorine being the more reactive halogen will displace the iodine and form a solution of potassium chloride and iodine which turns the solution from colourless to dark purple(iodine's color)

ANS; black iodine solide

Na2 CO3 + 2 CH3COOH → 2 CH3COONa + CO2 + H2O

Both reactants have to dissocciate first in water, their ions then interchange species.

Here the 2 Cations Na+ leave the molecule of Carbonate, are attracted by the negative charge of acetate and bond to i

ANS; foam as carbondioxide

Answer 2

Answer:

Magnesium metal reacts with dilute nitric acid to form magnesium nitrate and hydrogen gas. Mg + HNO3M g(NO3) + H2(g)

ANS; magnesium

chlorine being the more reactive halogen will displace the iodine and form a solution of potassium chloride and iodine which turns the solution from colourless to dark purple(iodine's color)

ANS; black iodine solide Na2 CO3 + 2 CH3COOH + 2 CH3COONa + CO2 + H2O

Both reactants have to dissocciate first in water, their ions then interchange species. Here the 2 Cations Na+ leave the molecule of Carbonate, are attracted by the negative charge of acetate and bond to i ANS; foam as carbondioxide