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Fe(2)O(3(s))+2Al((s))rarr 2Fe((s))+Al(2)...

`Fe_(2)O_(3(s))+2Al_((s))rarr 2Fe_((s))+Al_(2)O_(3(s))` is a/an …………….

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Calculate standard entropy change in the reaction Fe_(2)O_(3(s)) + 3H_(2(g)) rarr 2Fe_((s)) + 3H_(2)O_((l)) Given: S_(m)^(0) (Fe_(2)O_(3), s) = 87.4 S_(m)^(0) (Fe, s) = 27.3, S_(m)^(0) (H_(2)g) = 130.7, S_(m)^(0) (H_(2)O, 1) = 69.9 JK^(-1) mol^(-1)

In the reactions given below, identify the species undergoing oxidation and reduction : (i) H_(2)S (g) + Cl_(2) (g) rarr HCl (g) + S (s) (ii) 3Fe_(3)O_(4) (s) + 8 Al (s) rarr 9 Fe(s) + 4Al_(2)O_(3) (s) (iii) 2Na (s) + H_(2) (g) rarr 2 NaH (s)

Al_((s)) + fe_(2)O_(3(s)) to Al_(2) O_(3(s)) + Fe_((s)) (atomic masses of Al = 27U, Fe = 56U, and O = 16U) 2Al_((s)) +Fe_(2)O_(3(s)) to Al_(2)O_(3(s)) + 2Fe_((s)) , is a balanced equation. (2 xx 27)U + (2xx 56 + 3xx 16)U to (2xx 27 + 3 xx 16) U + (2 xx 56) U {:(54U+160U,,to102U+112U),(or2" mol" + "1 mol",,to 1"mol" + 2"mol"),(54g + 160g ,, to 102 g + 112 g):} Suppose that your asked to calculate the amount of aluminium, required to get 1120 kg of iron by the above reaction.

In how many of the following entropy increases? {:((a) N_(2(g)) + 3H_(2(g)) rarr 2NH_(3(g)),(b)PCl_(5(g)) rarr PCl_(3(g)) + Cl_(2(g))),((c ) H_(2)O_((s)) rarr H_(2)O_((g)),(d)H_(2)O_((l)) rarr H_(2)O_((g))),((e ) 2NaHCO_(3(s)) rarr Na_(2)CO_(3(s)) + H_(2)O_((g)) + CO_(2(g)),(f ) NH_(2)CO_(2)NH_(4(s)) rarr 2NH_(3(g)) + CO_(2(g))),((g) H_(2)O_((l)) rarr H_(2)O_((s)),(h) CO_(2(s)) rarr CO_(2(g))):}

C_((s))+O_(2(g))rarr CO_(2(g))+Q is ………………….

The following two reactions are known Fe_(2) O _(3 (s)) + 3 CO _((g )) to 2 Fe _((s)) +3 CO _(2 (g)) , Delta H =- 26.8 kJ//mol FeO _((s)) + CO _((g)) to Fe _((s)) +CO _(2 (g)), Delta H =- 16.5 kJ//mol The value of Delta H for the following reaction Fe _(2) O _(3 (s)) + CO _((g)) to 2 Feo_((s)) + CO _(2 (g)) is

DeltaS_("says") "for" 4Fe_((s)) + 3O_(2) rarr 2Fe_(2) O_(3(s)) " is" -550 J//k//mol at 298K. If enthalpy change for same process is -1600kJ//mol, DS_("total") (in J/mol/K) is

Al_((s))+Fe_(2)O_(3(s))rarrAl_(2)O_(3(s))+Fe_((s)) 54_((g))+160_(g)rarr 102g+112 was given, Then, the amount of aluminium required to get 1120 grams of iron is

VGS PUBLICATION-BRILLIANT-CHEMICAL REACTIONS AND EQUATIONS-OBJECTIVE TYPE QUESTIONS
  1. Choose the alloy

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  2. A balanced equation contains

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  3. Fe(2)O(3(s))+2Al((s))rarr 2Fe((s))+Al(2)O(3(s)) is a/an …………….

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  4. Which of the following is not a double decomposition reaction?

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  5. Which of the following statement is wrong?

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  6. Which of the following is not a exothermic reaction?

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  7. Which one is not formed by a combustion reaction?

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  8. Which one is not a redox reaction?

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  9. Which one cannot be decomposed ?

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  10. Fe+CuSO(4)+cu Zn+AgNO(3)rarr Zn(NO(3))(2)+2Ag Which metals are mor...

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  11. A balanced chemical equation is appreciable because, it gives

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  12. 6CO(2)+6H(2)Orarr C(6)H(12)O(6)+6O(2). The reaction is appreciable, be...

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  13. Vitamin 'C' and Vitamin 'E' are appreciable because, they can prevent

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  14. Wh should appreciate alloys, because they

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  15. Your house was just white washed. Now it looks in white shiny finish, ...

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  16. This can be used as a Diwali crackers

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  17. You should not put your hands in the vessel while preparing quicklime ...

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  18. Which reaction is very useful to plants?

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  19. Which method is very easy to prevent corrosion of iron frames in our h...

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  20. How can you prevent rancidity of food items at your home ?

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