Out of following pair , point out the stronger Lewis acid and assign the reason:
(a) BF3 and BH3
(b) Sn+2 and Sn+4
1 Answers
Talk Doctor Online in Bissoy App
Which of the following statements is true? (a) H3 PO3 is a stronger acid than H2SO3.
(d) : Higher is the oxidation state of the central atom, greater is the acidity. Hence, HClO4 is a stronger acid than HClO3. HNO3 is a stronger acid than HNO2. Now, greater is...
1 Answers 1 views
Assign a reason for each of the following statements:
(i) As the atomic size of nitrogen is smaller than phosphorus, therefore electron density on nitrogen atom is higher than that on phosphorus atom. Consequently the tendency of N in...
1 Answers 1 views
Assign reasons for the following : (i) In liquid state, hydrogen chloride is a stronger acid than hydrogen fluoride.
(i) It is due to (a) Intermolecular hydrogen bonding in HF. (b) Higher H—F bond dissociation enthalpy than H—Cl. (ii) As P—P single bond (213 kJ mol-1) in P4 is much weaker than...
1 Answers 1 views
Explain giving a reason for each of the following situation: (i) In aqueous medium, HCl is a stronger acid than HF.
(i) Because bond dissociation enthalpy of H—Cl is lower than H—F. (ii) White phosphorus is more reactive than red phosphorus due to its discrete tetrahedral structure and angular strain. Red phosphorus...
1 Answers 1 views
Neither ‘q’ nor ‘w’ is a state function but “ q + w” is a state function. Assign reason.
ΔU = q + w and ‘∆U’ is a state function, which depends upon initial and final states of the system and not upon its path.
1 Answers 1 views
Assertion (A) : Formic acid is a stronger acid than acetic acid. Reason (R) : Formic acid is an organic acid.
(b) Formic acid is stronger than acetic acid due to its chemical composition. Formic acid is an organic acid as well as active acid in an organic acid.
1 Answers 2 views
Assign the reason for the following: (a) Enthalpy of fusion of water is higher as compared to the hydrides of Sulphur & Selenium.
a) Due hydrogen bond it has high latent heat of fusion b) Water is a stable compound and its decomposition is not thermodynamically feasible
1 Answers 1 views
Assign the reason for the following observations: (a) The temporary hardness of water is removed by boiling.
a) because calcium and magnesium bicarbonates decomposes on heating or boiling b) It precipitates out calcium carbonate and magnesium hydroxide which can be filtered off. c) Permutit/Zeolite is said to be exhausted...
1 Answers 1 views
An oxidising agent is needed in the iodination of methane but not in the chlorination or bromination . Assign reason-
In the iodination of methane, H-I is also formed as the product along with iodomethane. Since it is a strong reducing agent, it reduces iodomethane back to methane and makes...
1 Answers 1 views
H3BO3 is :- (a)Monobasic and a weak Lewis acid (b)Monobasic and a weak Bronsted acid
(a)Monobasic and a weak Lewis acid
1 Answers 1 views