Question

State the type of chemical reactions and chemical equations that take place in thefollowing:
a. Magnesium wire is burnt in air.
b. Electric current is passed through water.
c. Ammonia and hydrogen chloride gases are mixed.
d. Iron reacts with steam
e. Magnesium reacts with dil. HCl
f. Copper is heated in air.
g. Silver turning black (tarnishing of silver)
h. Sodium metal reacts with water

Answer 1

$\huge{ \underline{ \mathscr{ \red{Answer}}}}$

$\pmb{Combination \: Reaction}$

$\pmb{Mg + O2→ MgO}$

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$\pmb{decomposition \: reaction}$

$\pmb{H20→ H2+o2}$

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$\pmb{Combination \: Reaction}$

$\pmb{NH3 (g) + HCl (g) → NH4Cl(s).}$

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$\pmb{Redox \: reaction}$

$\pmb{2K(s)+ 2H2O(l) → 2KOH(aq) + H2(g) + heat.}$

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$\pmb{Single \: replacement \: reaction}$

$\pmb{Mg(s) + 2 HCl(aq) → MgCl 2(aq) + H 2(g) }$

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$\pmb{Combination \: reaction}$

$\pmb{2 Cu + O2 → 2 CuO.}$

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$\pmb{Exothermic \: reaction}$

$\pmb{2Na + 2H2O→ 2NaOH + H2}$