Question

Date 10/25 /19 Laboratory Instructor DC. (200 REPORT SHEET Titration of Acids and Bases EXPERIMENT 20 OMLT Trial 3 A. Standardization of Sodium Hydroxide (NaOH) Solution *Buret used was invertedt Trial 1 Trial 2 Mass of bottle + KHP 2.6872 1455 2.863a Mass of bottle 2.145g 2.359, Mass of KHP used 0.532g 0.5049 Final buret reading 42.4mL 39.9mL Initial buret reading bo o to the 50.0mL 50.0mL mL of NaOH used 42.4mL 39-9mL Molarity of NaOH Average molarity Standard deviation Show your calculations for molarity and standard deviation.

Answer 1

nechaliratran RHP + NaOH → twent or the moles KHP 2 . moles Noon used. Na mL naon used & Cinhala final) burer reading so omL- 42-4mL 7.6 mi used soome -39.9mL . 10ml mal me wood _ thalt moles KCHP mass molar mass 0-5329 204-22g/mol 2 0.0026 og moles 20-0026! males NOCH a 0.002605 moles mx 7.6ml x16 3 2 0-002605 moles 2) moles 2) Miveron 2 0.34 M moles Knp . o 5049 204. 29/mol u-00246792 0.00247 moles. E) Mooon & 10-1 mi xol a 0.00 24 67, moles - Macon I lo• 244 m) average molanty 2 (0.343 +0.244) m. m 210-294 m.] Standard deviation & E (m. _m2 ni (0-343-0-294)? (0-244-0.294? 27 0.000 2