Question

question
given the formula for borate as $bo_3^{3-}$, what is the formula for boric acid?
answer
$h_2bo_2$
$h_3bo_3$
$h_3bo_4$
$hbo_3$
i dont know yet

Explanation:

Step1: Identify borate ion charge

The borate ion is $\text{BO}_3^{3-}$, so its charge is $-3$.

Step2: Balance charge with $H^+$

To form a neutral acid, add 3 $\text{H}^+$ ions to balance the $-3$ charge.

Step3: Write neutral acid formula

Combine $\text{H}^+$ and $\text{BO}_3^{3-}$: $3\text{H}^+ + \text{BO}_3^{3-}
ightarrow \text{H}_3\text{BO}_3$

Answer:

$\text{H}_3\text{BO}_3$ (the second option)