Formic acid, HCHO2, is a convenient source of small quantities of carbon monoxide. When warmed with sulfuric acid, formic acid decomposes to give CO gas. HCHO2(l) ? H2O(l) CO(g) If 4.87 L of carbon monoxide was collected over water at 25.0°C and 623 mmHg, how many grams of formic acid were consumed?