Calculate the Concentration of Chromate Ion (CrO₄^2-)in a 0

question 74

Multiple Choice

Calculate the concentration of chromate ion (CrO₄^2-) in a 0.450 M solution of chromic acid (H₂CrO₄) .[For chromic acid, K_a1 = 0.18, K_a2 = 3.2 × 10^-7.]

• A)3.2 × 10^-7 M
• B)1.5 × 10^-6 M
• C)0.081 M
• D)1.1 × 10^-6 M
• E)0.21 M

---

Definitions:

Subject-Line

The subject line of an email, intended to provide a summary of the email's contents and motivate the recipient to read the message.

Good News

News or messages that are encouraging, positive, or advantageous to those who receive them.

Subject Line

The title or heading of an email, designed to summarize the message's content and encourage the recipient to open the email.

Electronic Messages

Communications transmitted over digital platforms such as email, messaging apps, or social media.