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2.0g of a sample contains mixture of SiO...

`2.0g` of a sample contains mixture of `SiO_2 and Fe_2O_3`. On very strong heating, it leaves a residue weighing `1.96 g`. The reaction responsible for loss of mass is given below. Fe_2O_3(s)rarrFe_3o_4(s)+O_2(s)`, (unbalance equation) what is the percentage by mass of `SiO_2` in original sample ?

Answer

Step by step text solution for 2.0g of a sample contains mixture of SiO_2 and Fe_2O_3. On very strong heating, it leaves a residue weighing 1.96 g. The reaction responsible for loss of mass is given below. Fe_2O_3(s)rarrFe_3o_4(s)+O_2(s), (unbalance equation) what is the percentage by mass of SiO_2 in original sample ? by CHEMISTRY experts to help you in doubts & scoring excellent marks in Class 11 exams.

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2.0 g of a sample contains mixture of SiO_(2) and Fe_(2)O_(3) . On very strong heating , it leaves a residue weighing 1.96 g . The reaction responsible for loss of mass is given below . Fe_(2)O_(3)(s) to Fe_(3)O_(4)(s) + O_(2)(g) , (unbalance equation) lt brgt What is the precentage by mass of SiO_(2) in original sample ?

2.0 g sample contain mixture of SiO_(2) and Fe_(2)O_(3) , on very strong heating leave a residue weighing 1.96 g. The reaction responsible for loss of weight is Fe_(2)O_(3)(s) rarr Fe_(3)O_(4)(s) +O_(2)(g) . What is the percentage by mass of SiO_(2) in original sample ? [Atomic mass : Fe = 56, O = 16, Si = 28]

Knowledge Check

  • 1.5gm mixture of SiO_(2) and Fe_(2)O_(3) on very strong heating leave a residue weighting 1.46gm . The reaction responsible for loss of weight is . Fe_(2) O_(3) (s) rarr Fe_(3)O_(4) (s) + O_(2)(g) What is the percentage by mass of Fe_(2)O_(3) is original sample .

    A
    `80%`
    B
    `20%`
    C
    `40%`
    D
    `60%`

  • 3 gm mixture of SiO_(2) and Fe_(2)O_(3) on very strong heating leaves a residue weighing 2.92gm because of conversion of Fe_(3)O_(4) liberating oxygen gas. What is the percentage by mass of SiO_(2) in original mixture?

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    B
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    D
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  • An iron sample contains 18% Fe_3 O_4 . What is the amount so that it is precipitated as Fe_2 O_3 which weighs 0.40 g?

    A
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    B
    `1.075 g`
    C
    `4.30 g`
    D
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    1.5 gm mixture of SiO_(2) and Fe_(2)O_(3) on very strong heating leave a residue weighting 1.46 gm. The reaction responsible for loss of weight is Fe_(2)O_(3)(s) to Fe_(3)O_(4)(s) +O_(2)(g) What is the percentage by mass of Fe_(2)O_(2) in original sample.

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