Q129CP

Question

Transition metals, located in the centre of the periodic table, have many essential uses as elements and form many important compounds as well. Calculate the molecular mass of the following transition metal compounds:
(a) [Co(NH3)6]Cl3 (b) [Pt(NH3)4BrCl]Cl
  (c) K4[V(CN)6]  (d) [Ce(NH3)6][FeCl4]3

Step-by-Step Solution

Verified
Answer

The molecular mass for the transition metal compounds is as follows:

  1. 267.46 amu
  2. 449.45 amu
  3. 363.40 amu
  4. 835.25 amu
1Step 1: Finding the molecular mass for [ Co NH 3 6 ] Cl 3

The atomic mass of each element and add the atomic mass can be denoted as,


Molecular mass= Atomic mass of Co+6×Atomic mass of (N+3H)                             +3×Atomic mass of Cl                             =58.93+6(14+3(1.01))+3(35.45)                             =267.46 amu


2Step 2: Finding the molecular mass for [ Pt ( NH 3 ) 4 BrCl ] Cl 2

 The atomic mass of each element and add the atomic mass can be d Molecular mass= Atomic mass of Pt+4×Atomic mass of (N+3H)+Atomic mass of Br                             +3×Atomic mass of Cl                             =195.08+4(14+3(1.01))+79.9+3(35.45)                             =449.45 amu


3Step 3: Finding the molecular mass for K 4 [ V ( CN ) 6 ]

The atomic mass of each element and add the atomic mass can be denoted as,

Molecular mass= 4×Atomic mass of K+Atomic mass of V+                                6×Atomic mass of (C+N)                             =4(39.1)+50.94+6(12.01+14)                             =363.4 amu

4Step 4: Finding the molecular mass for [ Ce ( NH 3 ) 6 ] | [ FeCl 4 ] 3

The atomic mass of each element and add the atomic mass can be denoted as,


Molecular mass= Atomic mass of Ce+6×Atomic mass of (N+3H)                              +3×Atomic mass of (Fe+4Cl)--(1)                             =140.12+6(14+3(1.01))+3(55.58+4(35.45))                             =835.25 amu