Question

directions: answer each question completely. indicate how you determined the answer to each question below.

1. translate the following word equations into skeletal equations. write your final answer on the line.

a. potassium chlorate → potassium chloride + oxygen

b. aluminum bromide + sodium → sodium bromide + aluminum

c. zinc sulfide + lead (ii) nitrate → lead (ii) sulfide + zinc nitrate

d. potassium + water → potassium hydroxide + hydrogen

Explanation:

Part a

Step1: Identify chemical formulas

Potassium chlorate is $KClO_3$, potassium chloride is $KCl$, oxygen is $O_2$.

Step2: Write skeletal equation

Translate the word equation to formula equation: $KClO_3
ightarrow KCl + O_2$

Step1: Identify chemical formulas

Aluminum bromide is $AlBr_3$, sodium is $Na$, sodium bromide is $NaBr$, aluminum is $Al$.

Step2: Write skeletal equation

Translate the word equation to formula equation: $AlBr_3 + Na
ightarrow NaBr + Al$

Step1: Identify chemical formulas

Zinc sulfide is $ZnS$, lead (II) nitrate is $Pb(NO_3)_2$, lead (II) sulfide is $PbS$, zinc nitrate is $Zn(NO_3)_2$.

Step2: Write skeletal equation

Translate the word equation to formula equation: $ZnS + Pb(NO_3)_2
ightarrow PbS + Zn(NO_3)_2$

Answer:

$KClO_3
ightarrow KCl + O_2$

Part b