Question

List the three requirements for a correctly written chemical equation.2. Give one example of a word equation, one example of a formula equation, and one example of a chemical equation.3. Write formulas for each of the following compounds.a. potassium hydroxide b. calcium nitrate

Answer 1

Answer:

Requirements for a correctly written chemical equation are reactants and products, their formula and valency

Explanation:

Formula of the given compound are -

1 - Potassium Hydroxide - $KOH$

2 - Calcium Nitrate - $Ca(NO_3)_2$

The requirements for a correctly written chemical equation are -

• Identifying reactants and products
• Formula of reactants and products
• Valency of elements

Example of word equation, formula equation, and chemical equation is as follows -

Aluminium + iron9(III)oxide ⇒ aluminium oxide + iron (word equation)

$Al_(_s_)$  + $Fe_2O_3_(_s_)$    ⇒   $Al_2O_3_(_s_)$  + $Fe_(s)$ (formula equation)              

$2Al_(_s_)$ + $Fe_2O_3_(_s_)$    ⇒   $Al_2O_3_(_s_)$   + $2Fe_(_s_)$ (chemical equation)