What is the freezing point of a solution containing 8.1
Asked by admin @ in Chemistry viewed by 317 People
Calculate the freezing point of a solution containing 8.1 g of hbr in 100 g of water assuming the acid to be 90% ionised
Asked by admin @ in Chemistry viewed by 317 People
Calculate the freezing point of a solution containing 8.1 g of hbr in 100 g of water assuming the acid to be 90% ionised
Answered by admin @
The freezing point of the solution will be -3.53⁰C
Explanation:
molar mass of HBr = 81 g
=> number of moles of HBr in 8.1 hm = 8.1/81 = 0.1 moles.
HBr ⇔ H⁺ + Br⁻
Hence,
i = 1 + (2-1)x0.9 = 1.9
We know that,
ΔT = i x Kf x 1000 x m/w
= 1.9 x 1.86 x 1000 x 0.1/100
= 3.53
=> Freezing point = 0 - 3.53
= -3.53⁰C
Hence freezing point of the solution will be -3.53⁰C
Asked by admin @ in Chemistry viewed by 358 persons
Asked by admin @ in Chemistry viewed by 313 persons
Asked by admin @ in Biology viewed by 309 persons
Asked by admin @ in Chemistry viewed by 285 persons
Asked by admin @ in Physics viewed by 296 persons
Asked by admin @ in Chemistry viewed by 287 persons
Asked by admin @ in Chemistry viewed by 293 persons
Asked by admin @ in Chemistry viewed by 300 persons
Asked by admin @ in Math viewed by 339 persons
Asked by admin @ in Chemistry viewed by 336 persons
Asked by maham237 @ in Chemistry viewed by 289 persons
Asked by maham237 @ in Chemistry viewed by 325 persons
Asked by maham237 @ in Mathematics viewed by 272 persons
Asked by maham237 @ in Chemistry viewed by 390 persons
Asked by admin @ in Chemistry viewed by 332 persons
Asked by admin @ in Chemistry viewed by 2186 persons
Asked by admin @ in Chemistry viewed by 1924 persons
Asked by admin @ in Chemistry viewed by 1392 persons
Asked by maham237 @ in Chemistry viewed by 1320 persons
Asked by admin @ in Chemistry viewed by 1281 persons
Asked by maham237 @ in Chemistry viewed by 1248 persons
Asked by admin @ in Chemistry viewed by 1246 persons
Asked by maham237 @ in Chemistry viewed by 1219 persons
Asked by maham237 @ in Chemistry viewed by 1033 persons
Asked by admin @ in Chemistry viewed by 1007 persons
Asked by maham237 @ in Chemistry viewed by 983 persons