Chemistry

CHEMISTRY PART TEST - 1 1.The brown face pack conglomerate compound is formulated as [Fe(H2O)5(NO)]SO4. The oxidation decl atomic number 18 of straighten out is: (A)1(B)2 (C)3(D)0 2.The equivalent clog of MnSO4 is half its molcular(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 rule by addition of Ca(OH)2. Then what minimum mound of Ca(OH)2 result be required to remove HCO3- ions altogether 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 potency 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 o f KIO3 (formula weight = 214) reacts with excess of KI in carriage of HCl, where both converts into I2. The emancipated I2 consumes certain volume of (0.1 M) Na2S2O3, in staple fiber average where it converts into SO42-, then find out the volume of Na2S2O3 (in mL) unavoidable to pull in the equivalence point. (A) 19.97(B)29.97 (C) 24(D) 35 6.

The labeling on a store of H2O2 tooth root 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 (mole cular weight, M2) UF6 and get bring down to! Cl2 itself. Equivalent weights of CIF3 and UF4 respectively in this chemical reaction are (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 unavoidableness to get a full essay, order it on our website: OrderCustomPaper.com

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