Recent questions tagged Probability-mcq

0 votes

Q: The vapour pressure of water is `12.3 kPa` at `300 K`. Calculate vapour pressure of `1` molal solution of a solute in it.

The vapour pressure of water is 12.3kPa at 300K . Calculate vapour pressure of 1 molal solution of a solute in it. Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

0 votes

Q: Calculate the mass of a non-volatile solute ( molecular mass `40`) which should be dissolved in `114 g` octane to reduce its vapour pressure to `80%`.

Calculate the mass of a non-volatile solute ( molecular mass 40 ) which should be dissolved in 114g octane to ... pressure to 80% . Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

0 votes

Q: A solution containing `30 g` of a non-volatile solute exactly in `90 g` water has a vapour pressure of `2.8 kPa` at `298 K`. Further `18 g` of water i

A solution containing 30g of a non-volatile solute exactly in 90g water has a vapour pressure of 2.8kPa at 298K. ... of water at 298K. Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

0 votes

Q: A `5%` solution (by mass) of cane sugar in water has freezing point of 271 K. Calculate the freezing point of a 5% glucose (by mass) in water. The fre

A 5% solution (by mass) of cane sugar in water has freezing point of 271 K. Calculate the freezing point of a 5% ... water is 273.15 K. Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

0 votes

Q: Two elements `A` and `B` form compounds having molecular formula `AB_(2)` and `AB_(4)`. When dissolved in `20 g` of benzene, `1 g`of `AB_(2)` lowers t

Two elements A and B form compounds having molecular formula AB2 and AB4 . When dissolved in 20g of benzene, 1g of AB2 ... of A and B . Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

0 votes

Q: At `300 K`, `36 g` of glucose present per litre in its solution has an osmotic pressure of `4.98 bar`. If the osmotic pressure of the solution is `1.5

At 300K , 36g of glucose present per litre in its solution has an osmotic pressure of 4.98 ¯ . If the ... would be its concentration? Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

0 votes

Q: Based on solute `-` solvent interactions, arrange the following in order of increasing solubility in `n-`octane and explain the result. Cyclohexane, `

Based on solute - solvent interactions, arrange the following in order of increasing solubility in n- octane and ... CHM3OH,CHM3CN . Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

0 votes

Q: Among the following compounds, identify whiCHM are insoluble, partially soluble, and highly soluble in water ? `a.` Phenol `b.` Toluene `c.` Formic ac

Among the following compounds, identify whiCHM are insoluble, partially soluble, and highly soluble in water ? a. ... f. Pentanol Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

0 votes

Q: If the density of some lake water is `1.25 g mL^(-1)` and contains `92g` of `Na^(o+)` ions per `kg` of water, calculate the molality of `Na^(o+)` ions

If the density of some lake water is 1.25gmL-1 and contains 92g of Na⊕ ions per kg of water, calculate the ... Na⊕ ions in the lake. Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance

0 votes

Q: If the solubility product of `CuS` is `6xx10^(-16)`, calculate the maximum molarity of `CuS` in aqueous solution.

If the solubility product of CuS is 6×10-16 , calculate the maximum molarity of CuS in aqueous solution. Select the correct answer from above options...

asked Jan 5, 2022 in Education by JackTerrance