Welcome to Chem Zipper.com......: EQUIVALENT CONCEPT

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Showing posts with label EQUIVALENT CONCEPT. Show all posts
Showing posts with label EQUIVALENT CONCEPT. Show all posts

## Friday, May 5, 2023

### The Normality of 4.9% (w/w) H2SO4 solution having density .02 gm/ml is ?

Ans key: (1.02 N )

And : (3/10)

## Sunday, June 28, 2020

### Vapour density of mixture of NO2 and N2O4 is 34.4 , then percentage abundance (by volume) of NO2 in mixture is .

Molecular weight = 2×VD
= 2× 34.5 = 69 u
Consider ℅ of NO2 is "x" then % of N2O4 is "100-x"

## Saturday, June 6, 2020

### 40 gm metal oxide (MO) contain 4 gm of Oxygen.Calculate the equivalent wt of a metal.

40 gm metal oxide contains 4 gm of Oxygen mean it has 36 gm of metal.
Then Equivalent wt of metal is
E_m = (Wt of metal/Wt of Oxygen)×8
E_m = (36gm /4gm)×8
E_m = 72 gm equivalent

### A metal oxide contains 60% metal by mass. The equivalent weight of metal is ..?

Metal Oxide contains 60% metal by mass means 100g of this oxide has 60 g metal and 40g oxygen.

Equivalent Wt of Metal = (Wt of metal/Wt of Oxygen)×8
E_m = 60×8/40 = 12gm equivalent