One gram metal (Equivalent wt. 40) was burnt in excess of atmospheric oxygen. The metal oxide formed was dissolved in 100 ml water and solution is diluted up to 5 litre . normality of the solution is
Answers
Answer:
Normality of the solution will be 0.005 N
Explanation:
Since atomic weight 40 belongs to calcium, hence the given metal is calcium(Ca), the Reaction for the Chemical Process is as follows:
Ca+ 1/2 O₂ =CaO
CaO +H₂O = Ca(OH)₂
The weight of Ca =40
The molar weight of CaO =40 +16 =56
Molar weight of Ca(OH)₂ = 74
equivalent weight of Ca(OH)₂ = 74/2 = 37
40 grams of Ca produces 74 grams of Ca(OH)₂
1 gram of Ca is will produce 74/40 gram Ca(OH)₂ =1.85
Or
1.85/37 = 0.05 gram equivalent of Ca(OH)₂
Therefore 0.05gram is dissolved in 100 ml
Hence normality of the solution = 0.05 x (100/1000) = 0.005 N
Answer is 0.005N
Explanation:Since atomic weight 40 belongs to calcium, hence the given metal is calcium(Ca), the Reaction for the Chemical Process is as follows:
Ca+ 1/2 O₂ =CaO
CaO +H₂O = Ca(OH)₂
The weight of Ca =40
The molar weight of CaO =40 +16 =56
Molar weight of Ca(OH)₂ = 74
equivalent weight of Ca(OH)₂ = 74/2 = 37
40 grams of Ca produces 74 grams of Ca(OH)₂
1 gram of Ca is will produce 74/40 gram Ca(OH)₂ =1.85
Or
1.85/37 = 0.05 gram equivalent of Ca(OH)₂
Therefore 0.05gram is dissolved in 100 ml
Hence normality of the solution = 0.05 x (100/1000) = 0.005 N
=5 x 10^-3 N