Hester reveals Chillingworth's identity to Dimmesdale in what chapter?

Hester reveals Chillingworth's true identity to Dimmesdale in Chapter Seventeen.

“O Arthur,” cried she, “forgive me! In all things else, I have striven to be true! Truth was the one virtue which I might have held fast, and did hold fast, through all extremity; save when thy good,—thy life,—thy fame,—were put in question! Then I consented to a deception. But a lie is never good, even though death threaten on the other side! Dost thou not see what I would say? That old man!—the physician!—he whom they call Roger Chillingworth!—he was my husband!”