Question

Which four numbers a, b, c and d are required to balance the equation?
a Na(s) + b H2O(l) ==> c NaOH(aq) + d H2(g)

Answer 1

Balance the equation

Explanation:

a Na(s) + b H2O(l) ==> c NaOH(aq) + d H2(g)

The stochiometric coefficients for the above reaction are:

a=2

b=2

c=2

d=1

So the final balanced equation would be:

$2Na(s) + 2 H_{2}O(l) -->2NaOH(Aq) + H_{2}$

When 2 moles of sodium metal react with 2 moles of water, they form 2 moles of sodium hydroxide and 1 mole of hydrogen gas.