A solution of Ba (OH)2 was standardized against 0.1260 g of primary-standard-gra

Question

A solution of Ba (OH)2 was standardized against 0.1260 g of primary-standard-grade benzoic acid, CeH COOH (122.12 g/mol). An end point was observed after addition of 43.79 mL of base. a. Calculate the molar concentration of the base. Concentration b. Calculate the standard deviation of the molar concentration if the standard deviation for the mass measurement was ±0.4 mg and that for the volume measurement was ±0.02 mL. Standard deviation c. Assuming an error of-0.3 mg in the mass measurement calculate the absolute and relative systematic error in the molar concentration. Absolute systematic error Relative systematic error ppt Submit Answer Try Another Version 9 item attempts remaining

Explanation / Answer

MOLE no of benzoic acid = moles no. of Barium Hydroxide

MOLE no of benzoic acid = ( 0.1260/12212) = 1.032 × 10^-3

a) concentration of base =  (1.032 × 10^-3 )/(43.79×10^-3) (M) = 0.0236 (M)

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.