MEDIUMMCQ SINGLEJEE Advanced ChemistryPhysical ChemistryMole _ Equivalent ConceptEquivalent Weight & Equivalent Concept

The  vapour  density  of  a  chloride  of  an  element  is 39.5.  The  Ew  of  the  elements  is  3.82.  The  atomic weight of the element is

A.15.28
B.7.64
C.3.82✓ Correct
D.11.46
Explanation

Mwt 2 2 39.5 79 VD x x Eq wt of chloride = eq wt of element + eq wt of chlorine 3.82 35.5 39.32 >>vf of chloride = 79 2 39.32 So valence of element = 2 At wt = 2 3.82 7.64g x 145. What  weight  of  a  metal  of  equivalent  weight  12  will give 0.475 g of its chloride? (a) 0.12 g (b) 0.24 g (c) 0.36 g (d) 0.48 g Equivalent weight of metal Equivalent weight of compound Weight of metal Weight of compound 12 Weight of metal 12 35.5 0.475 Weight of metal 0.12g >> >> The correct option is (a) 146.  How many grams of phosphoric acid would be needed to  neutralise  100  g  of  m

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