Question step step one9. The species HdosO, HCO3 – , HSOcuatro – and NH3 can act both as Bronsted acid and base. https://datingranking.net/escort-directory/hayward/ For each case, give the corresponding conjugate acid and base. Answer:
Question 20. (a) OH – ions (b) F – (c) H + (d) BCI3 Answer: (a) OH – ions can donate an electron pair and act as Lewis base. (b) F – ions can donate an electron pair and act as Lewis base. (a) H + ions can accept an electron pair and act as Lewis base. (b) BCl3 can accept an electron pair since Boron atom is electron deficient. It is a Lewis acid.
Question 21. Predict the acidic, basic or neutral nature of the solutions of the following salts: NaCI, KBr, NaCN, NH4NO3, NaNO2, KF. Answer: NaCN, NaNO2, KF solutions are basic, as they are salts of strong base, weak acid. NaCl, KBr solutions are neutral, as they are salts, of strong acid, strong base. NH4NO3 solution is acidic, as it is a salt of strong acid, weak base.
Question twenty-two. Ionic device of water on 310 K was dos.seven x ten -fourteen What is the pH of simple drinking water at this heat? Answer:
Concern 23. The newest aqueous provider from glucose will not run electricity whereas when sodium chloride was put into liquids, it conducts electricity. Justify that it declaration. Answer: step 1. Glucose are a low electrolyte whenever it dissolves within the water, there will be no ionisation takes place. If there is no 100 % free ions, it doesn’t perform fuel.
O is acid
2. When sodium chloride try put into liquid, it is entirely ionised to give Na ions and you can Cl – ions. Considering the presence out of ions, they will be odds of electhcal conductance. Because ions is providers regarding electric energy.
step 3. An effective Lewis acidic is an enthusiastic electron deficient molecule and you can with the capacity of recognizing a set of electrons and you may a beneficial Lewis ft try electron steeped molecule and you can able to giving a pair of electrons.