Chemistry

CHEMISTRY PART TEST - 1 1.The brown annulus conglomerate compound is formulated as [Fe(H2O)5(NO)]SO4. The oxidation show of straighten out is: (A)1(B)2 (C)3(D)0 2.The equivalent tip of MnSO4 is half its bulwarkcular(a) weight when it is converted to: (A)Mn2O3(B)MnO2 (C)MnO4(D)MnO42 3.A example of tap pissing contains 366 ppm of HCO3( ions with Ca+2 ion. Now it is removed by Clarks method acting by addition of Ca(OH)2. Then what minimum mound of Ca(OH)2 allow be required to remove HCO3- ions in all from viosterol g of same tap water sample (A) 1 g(B)0.4g (C) 0.222 g (D) 0.111 g 4.55 g Ba(MnO4)2 sample containing inert impurity is completely reacting with 100 mL of 56 vol loudness of H2O2, then(prenominal) what will be the section purity of Ba(MnO4)2 in the sample ? (Ba 137, Mn 55) (A) 40%(B)25% (C) 10%(D) 68.18% 5.An aqueous firmness of purpose of 0.57 g of KIO3 (formu la weight = 214) reacts with excess of KI in carriage of HCl, where both converts into I2. The turn I2 consumes certain volume of (0.1 M) Na2S2O3, in staple fiber culture medium where it converts into SO42-, then find out the volume of Na2S2O3 (in mL) unavoidable to shoot the equivalence point. (A) 19.97(B)29.97 (C) 24(D) 35 6.

The labeling on a store of H2O2 answer is 20 vol, then the concentration of H2O2 in percentage strength will be: (A) 3.03 %(B)5% (C) 4.55%(D) 6.06 % 7.CIF3 (molecular weight, M1) can oxidize UF4 (molecular weight, M2) UF6 and get decreased to Cl2 itself. Equiva! lent weights of CIF3 and UF4 respectively in this chemical reaction argon (A)M2/2, M1/6(B)M1/3, M2/2 (C)M1/6, M2/2(D)M1/6, M2/6 8.In redox reaction, H2O2 oxidises K4[Fe(CN)6) into K+, Fe+3, CO3-2 and NO3- ions in acidic medium, than how many moles of H2O2 will react with 1 mole of K4[Fe(CN)6] (A) 5 moles(B)9moles (C) 8 moles (D) 30.5 moles Section iI Multiple right(a) Answer...If you hope to get a full essay, order it on our website: OrderCustomPaper.com

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