Question

sodium reacts with water to form sodium hydroxide and hydrogen gas write write the chemical equation and balance them ​

Answer 1

Explanation:

2Na+ 2H2O ---> 2NaOH +H2

Answer 2

Answer- The above question is from the chapter 'Chemical Equations and Reactions'.

Chemical Equation- An equation which shows a chemical change or chemical reaction taking place using symbols and chemical formulae is called chemical equation.

Skeletal Chemical Equation- An unbalanced chemical equation is called skeletal chemical equation.

Examples:

1. Mg + O₂ → MgO

2. CO + O₂ → CO₂

3. Pb(NO₃)₂ + KI → PbI₂ + KNO₃

Balanced Chemical Equation- A chemical equation in which total mass of reactants is equal to total mass of products is called balanced chemical equation.

Examples:

1. 2Mg + O₂ → 2MgO

2. 2CO + O₂ → 2CO₂

3. Pb(NO₃)₂ + 2KI → PbI₂ + KNO₃

Given question: Sodium reacts with water to form sodium hydroxide and hydrogen gas. Write the chemical equation and balance them.

Answer: Let's write a skeletal chemical equation first.

Na + H₂O → NaOH + H₂

Balanced chemical equation:

2Na + 2H₂O → 2NaOH + H₂