Question

a 1.50 M HCI solution prepared from 120.0 mL of a 5.0 M HCl solution Express your answer using two significant figures. VAE V 83 L Previous AnsweEs Reguest Answer Submit X Incorrect; Try Again Part B a 4 50 %m/v) NaHCO, solution prepared from 230 mL of a 210 Express your answer using two significant figures m/v)NaHCO0

Answer 1

Answer c According to laws of equivalence - Civi = C2V2 and C2 are initial and final concentrations respectively and ₂ are initial and final volumes respectively I V • Here. = 5.0M, V = 120.0 mL & C2 = 1.50M & Vo = CIVI. (5.0M) X (120.0 mL) & 400 mL C2 11.50m) = 0.40 L 50g 0.40L of 1.50M He should be prepared Here, c, = 21.0% (m/v) 9 V = 230 mL & Ca = 4.50% (m/v) - V2 = CM - 22100% (m/v)]*(230 ML) = 1073 ML [4.50% (v/v) = 1.1 L (2 significant figures so 1.1L of 4.50% (m/v) NaHCO3 should be prepared