Ferrous sulphate heptahydrate is used to fort | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) The molar mass of ferrous sulphate heptahydrate $(FeSO_4 \cdot 7H_2O)$ is calculated as: $55.85 + 32.0 + 4 	imes 16.0 + 7 	imes 18.0 = 277.85 \;

Vedclass · Accepted Answer

$4.97$

Vedclass · Answer

(A) The molar mass of ferrous sulphate heptahydrate $(FeSO_4 \cdot 7H_2O)$ is calculated as: $55.85 + 32.0 + 4 	imes 16.0 + 7 	imes 18.0 = 277.85 \; g/mol$.Given,$10 \; ppm$ of iron in $100 \; kg$ of wheat means:$10 = \frac{	ext{mass of Fe (in mg)}}{	ext{mass of wheat (in kg)}}$Mass of $Fe$ required $= 10 	imes 100 = 1000 \; mg = 1 \; g$.In $FeSO_4 \cdot 7H_2O$,the mass fraction of $Fe$ is $\frac{55.85}{277.85}$.Let $w$ be the mass of the salt in grams:$w 	imes \frac{55.85}{277.85} = 1 \; g$$w = \frac{277.85}{55.85} \approx 4.97 \; g$.

Ferrous sulphate heptahydrate is used to fortify foods with iron. The amount (in $grams$) of the salt required to achieve $10 \; ppm$ of iron in $100 \; kg$ of wheat is
Atomic weight : $Fe = 55.85$,$S = 32.0$,$O = 16.00$

Similar Questions

The ratio of the molar amounts of $H_2S$ needed to precipitate the metal ions from $20 \ mL$ each of $1 \ M \ Cd(NO_3)_2$ and $0.5 \ M \ CuSO_4$ is

$50 \ mL$ of $0.5 \ M$ oxalic acid is needed to neutralize $25 \ mL$ of sodium hydroxide solution. The amount in grams of $NaOH$ in $50 \ mL$ of the given sodium hydroxide solution is:

$0.7 \ g$ of $Na_2CO_3 \cdot xH_2O$ were dissolved in water and the volume was made to $100 \ mL$. $20 \ mL$ of this solution required $19.8 \ mL$ of $N/10 \ HCl$ for complete neutralization. The value of $x$ is:

Which of the following is the correct formula to determine percent atom economy?

An aqueous solution of $4.5 \ g$ oxalic acid $(H_2C_2O_4)$ is made up to $250 \ mL$. Calculate the volume of $0.1 \ N$ $NaOH$ required to neutralize completely $20 \ mL$ of this solution.

Vedclass Test Series

Exam Paper Generator

Online Exam Module

Ferrous sulphate heptahydrate is used to fortify foods with iron. The amount (in $grams$) of the salt required to achieve $10 \; ppm$ of iron in $100 \; kg$ of wheat isAtomic weight : $Fe = 55.85$,$S = 32.0$,$O = 16.00$