2, R rensted-Lowry (BI) Definition of Acids aad Bases Brensted Lowry (BL) acids

Question

2, R rensted-Lowry (BI) Definition of Acids aad Bases Brensted Lowry (BL) acids and bases are defined as follows An acid is a substance that donate a proton 0 donor). A base is a substance that accepts a proton (H' accepooey According the definitions, an acid must contais in its chemical formula besedo s not always need to contain OH in its chemieal formula When an acid (HA) dissolves n water i reacts with water and um ions and its conjugate base (A HAM ag) HiOI) A lag) Hio (ap) cid dissociation Reaction The equilibrium constant of an acid-dissocialios reaction called the acidity constant [HA] Notice that water (solventy does not appear in the acidity constant expression Concentrations in mollarity ud). The acidity constant detemoines the strength of an acid in water. For example. muristic acid is a concentrated aqueous solution of hydrochloric aci d, HCL in wzter. water and prod The value of the acidity coastant for hydrochloric

Explanation / Answer

1)

HNO3(aq) + H2O   H3O + + NO3- (aq)

2)

Expression for Ka = [H3O +]  [NO3 -] / [HNO3]

3)

5 o/o (w/v) means 5 g HF in 100 ml.

Molecular mass of HF is 20 g/mol.

So 5g  = 5/20  = 0.25 moles of HF in 100 ml

4)

Molarity is number of moles in 1000 ml(1L).

0.25 moles in 100 ml so 2.5 moles in 1000 ml.

Molarity = 2.5 M

Related Questions

Navigate

• Browse (All)
• Browse 2
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.