Sodium hydrogendiacetate
(mol wt=142) has density 1.4g/cc. If cubic unit cell contains 24 molecules occupying complete volume cal edge length of cube

Question

Sodium hydrogendiacetate
(mol wt=142) has density 1 4g/cc If cubic unit cell contains 24
molecules occupying complete volume cal edge length of cube

Vartika Jain · Accepted Answer

Dear Student,

Molecular weight, M= 142Density, d= 1
4 g/ccLet the edge length be aVolume of unit cell = a3Let n be the number of sodium hydrogen diacetate units per unit cellVolume occupied by one molecule=a3nSo, Volume occupied by 24 molecules=a3×24nVolume occupied by 1and, Density= massVolume=Molar mass×na3×24Here, lattice type is not mentioned
 Let us consider it to be fccThen, n=4or, 1
4=142×4a3×24or, a3=142×41 4×24=16
9047or, a=2 56 cm

Sodium hydrogendiacetate (mol wt=142) has density 1.4g/cc. If cubic unit cell contains 24 molecules occupying complete volume cal edge length of cube

Sodium hydrogendiacetate
(mol wt=142) has density 1.4g/cc. If cubic unit cell contains 24 molecules occupying complete volume cal edge length of cube