Question step one9. The species HdosO, HCOstep 3 – , HSOcuatro – and NH3 can act both as Bronsted acid and base. 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.
Concern twenty two. Ionic unit out-of liquids within 310 K is actually dos.7 x 10 -fourteen What’s the pH away from natural h2o at that heat? Answer:
Matter 23. The aqueous service from sugar doesn’t conduct fuel while whenever salt chloride are added to h2o, it performs strength. Validate this declaration. Answer: step 1. Sugar was a low electrolyte and if it dissolves in water, there will be no ionisation occurs. If there’s zero totally free ions, it doesn’t carry out fuel.
O is acidic
2. Whenever sodium chloride try put into water, it is entirely ionised giving Na ions and you can Cl – ions. Due to the exposure out of ions, they shall be chances of electhcal conductance.