Question

learning: molecular compounds - acids (binary & oxyacids)
question
identify the formula for chromic acid.

Explanation:

Step1: Recall chromic acid composition

Chromic acid contains chromium(VI) and oxygen - hydrogen groups.

Step2: Determine the formula

Chromium(VI) has a +6 oxidation state. Oxygen has a - 2 oxidation state and hydrogen has a +1 oxidation state. To balance the charges, the formula is $H_2CrO_4$.

Answer:

$H_2CrO_4$