Question

151 Expt 8 - Chemical Properties PreLab Questions: Write balanced chemical equations for the following double displacement reactions. CIRCLE any precipitates that form. If a precipitate or liquid forms, also write a net ionic equation. 1) potassium iodide + silver nitrate Equation: Net ionic equation, if precipitate forms: 2) sodium carbonate + silver nitrate Equation: Net ionic equation, if precipitate forms: 3) ammonium chloride + silver nitrate Equation: Net ionic equation, if precipitate forms: 4) hydrochloric acid + silver nitrate Equation: Net ionic equation, if precipitate forms: 5) sodium hydroxide + silver nitrate Equation: Net ionic equation, if precipitate forms: 6) hydrochloric acid + sodium hydroxide Equation: Net ionic equation for the formation of liquid water: 75

please help!

Answer 1

1.

KI(aq) + AgNO3(aq) → AgI(S) + KNO3(aq)

This is already a balanced equation.

When we add KI to AgNO₃  the result AgI will precipitate. So the net reaction will be the reaction of Ag⁺ and I^- and the formation of AgI precipitate.

So the net ionic reaction will be;

Ag+ (aq) + (aq) + Al(s)

2.

Silver nitrate and sodium carbonate both are soluble in water react with each other to form silver carbonate has a very low solubility, it will precipitate as a white solid and sodium nitrate

$2 AgNO_{3}(aq) + Na_{2}CO_{3}(aq)\rightarrow Ag_{2}CO_{3}(s) + 2 NaNO_{3}(aq)$

Net ionic equation is

  $2 Ag^{+}(aq) + CO_{3}^{2-}(aq)\rightarrow Ag_{2}CO_{3}(s)$

3.

When silver nitrate and ammonium chloride react, they combine to form a white precipitate of silver chloride and aqueous ammonium nitrate. The balanced chemical reaction is shown as,

The net ionic equation is written by splitting the aqueous compounds into their respective ions. Hence the net ionic equation is,

Now, cancelling the common ions which are present on both s...

4.

$AgNO3(aq)+HCl(aq)\rightarrow AgCl(s)+HNO3(aq)$

The precipitate is AgCl

The Net ionic equation is

  $Ag^{+}(aq)+Cl^{-}(aq)\rightarrow AgCl(s)$

5.

In this reaction AgNO3 (Silver Nitrate) react with NaOH (Sodium Hydroxide) to form NaNO3 (Sodium Nitrate) & AgOH (Silver Hydroxide) as a precipitate.

Reaction:

$AgNO_{}3 (aq) + NaOH (aq)\rightarrow NaNO_{}3 (aq) + AgOH(s)$

* The precipitate's (AgOH) colour is Brown.

*(aq) or aqueous solution refers a solution in which the solvent is water.

*This reaction is exothermic‍. ΔH= -76.6 kj

The net ionic reaction is :

  $Ag^{+}(aq) + OH^{-} (aq)\rightarrow AgOH(s)$

6.

The last one is a Acid+Base reaction which Gives a Salt and Water.

The equation is

  $NaOH(aq)+HCl(aq)\rightarrow NaCl(aq)+H_{2}O$

There is typically no precipitate from the reaction of hydrochloric acid and sodium hydroxide. These compounds react to form sodium chloride, a compound that is quite water soluble. Thus, unless the solution is already saturated (which it is assumed not to be), there is no precipitate.