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Showing posts with label EQUIVALENT CONCEPT. Show all posts
Showing posts with label EQUIVALENT CONCEPT. Show all posts
Wednesday, August 30, 2023
The equivalent mass of a metal is 2.5 that of oxygen. The minimum molecular mass of its oxide is?
Answer key : 20 u
The equivalent mass of a metal is double that of oxygen. How many times is the equivalent mass of its oxide greater than the mass of the metal?
Answer key : 1.5 times
Friday, May 5, 2023
The Normality of 4.9% (w/w) H2SO4 solution having density .02 gm/ml is ?
Ans key: (1.02 N )
Sunday, June 28, 2020
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
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