Question

Determine the following. Please show your work II calculations, each correct, but unsupported answer is only worth 1 pont 31) The following equation describes ollowing equation describes the neutralization of phosphoric acid by the addition of potassium + hydroxide in aqueous solution: HPO4 3 KOH 3 H2O K3PO4 + If it takes 45.0 mL of 1.500 M KOH to neutralize 180,0 mL of a given H3PO4 So molarity of this phosphoric acid solution? [7 points] alize 180.0 mL of a given H3PO4 solution, what is the DATA ERVAR 32) True or False? The principal difference between the Arrhenius and the Bronsted-Lowry Acid-Base Theories lies in what constitutes a base? [1 point) The general term for a chelating agent that is used to form complexes with calcium and magnesium ions in hard water that interfere with the cleansing action of detergents is called: 33) [1 point) 34) The bonding scheme where both bonding electrons come from a single connected atom is called: bonding [1 point) 35) As discussed in class, an example of an environmentally-friendly degreaser would be: [1 point) True or False? The term, hydration, is used to describe where water molecules surround ions or molecules of solute and separate them from bulk material. [1 point) 37) A ligand that can deliver multiple pairs of electrons to form multiple bonds with a receiving chemical species is termed: [1 point)

Answer 1

131. 13 pou + 3 kon K₃PO4 + 3460 Using stoichiometry, formula used is- Mivi - Ma Vz M - molanity ni n-No. of moles in (4 Pou) (KOH) equation. 3 v- Volume < ni I n2=3 mole Here, Vi= 180.0 mL ni = 1 mole V = 45.0mL M₂ = 1.500m Putting values in equation (1.500m) (45.0mL) 3 mole Mix(180.0 mL) 1 mole M, = 0.125 M So molarity of typOy = 0.125m. 32. It is true. Arrhenious concept - Base donate or con Bronsted - Lowry concept - Bause accepts it in, 33. Ethylene diammine tetracetic acid (EDTA). 34. The bond is called coordinate bond e.g., thN: Bf3 N shares its é with B 4 form coordinate bond.