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Learning Check ... Calculate the pH of a 0.0010 M solution of formic acid, HCOOH (K = 1.8 x 10-4). HCOOH + H₂O → HCOO + H₂O* Approximate solution [H,O^] = 4.2 × 10-4 M, pH = 3.37 Exact Solution [H₂O'] = [HCOO-] = 3.4 x 10-4 M = [HCOOH] 0.0010 - 3.4 x 10-4 = 0.0007 M pH = 3.47 x 45 Calculate the pll of 0.0080 M Solution of Forms beid, Heart (PHD) Heah Hose + H² (Kor/8x6 42 0.00 [Hcp6][H") (HCH) 000/1 2-04²1-922-16-² pk3.37