`KNO_3`

Calculate the concentration of K^(o+) (x) and Cl^(ɵ) (y) in a solution obtained by mixing 20 " mL of " 0.1 M NaCl , 30 " mL of " 0.2 M KCl, and 25 " mL of " 0.15 M KNO_3 and making the solution up to 100 mL. (a). x=0.06,y=0.0375 (b). x=0.0975, y=0.08 (c). x=0.08,y=0.08 (d). x=0.08,y=0.0375

The following chemical reactions used to be untilized to rapidly produce large amounts of N_(2) gas inside an automobile air bag: 2NaN_(3) rarr 2 Na + 3 N_(2) (g) 10 Na + 2 KNO_(3) rarr K_(2) + 5 Na_(2) O + N_(2) (g) K_(2) O+ Na_(2) O + SiO_(2) rarr Alkaline silicate (glass) How many grams of KNO_(3) are needed to produce enough N_(2) to fill a 12.3 L air baG AT 27^(@)C and 4 atm. a. 202 g b. 81.25 g c. 404 g d. 25.25 g

Complete the missing components/variables given as x and y in the following reactions (a) Pb(NO_(3))_(2) (aq) + 2KI(aq) to PbI_(2)(x) + 2KNO_(3)(y) (b) Cu(s) + 2AgNO_(3)(aq) to Cu(NO_(3))_(2)(aq) + x(s) (c) Zn(s) + H_(2)SO_(4)(aq) to ZnSO_(4)(x) + H_(2)(y) (d) CaCO_(3)(s) overset(x)to CaO(s) + CO_(2)(g)

Pyrolusite ore on oxidation with KCIO_(3)//KNO_(3) in basic medium produces dark green coloured compound (A) , which on electrolysis produces a purple coloured compound (B) . The purple coloured rhombic prisms. It shows different reactions in different mediums. Excess of compounds (B) on heating with conc. H_(2)SO_(4) gives an explosive oil (C ), which on heating decomposes to gives another compound (D ) along with oxygen. The nature of compound (C ) is :

Pyrolusite ore on oxidation with KCIO_(3)//KNO_(3) in basic medium produces dark green coloured compound (A) , which on electrolysis produces a purple coloured compound (B) . The purple coloured rhombic prisms. It shows different reactions in different mediums. Excess of compounds (B) on heating with conc. H_(2)SO_(4) gives an explosive oil (C ), which on heating decomposes to gives another compound (D ) along with oxygen. Identify (D).

0.5 g of pure iron wire was dissolved in excess of HCl in absence of air and was then heated with 0.25 g of KNO_(3) . The following reaction takes place, 3FeCl_(2)+KNO_(2)+4"HCl"to3FeCl_(3)+KCl+2H_(2)O+NO When the reaction was over, the resulting solution was titrated against 0.1 N K_(2)Cr_(2)O_(7) . What volume of dichromate would be consumed? ATomic weight of Fe=55.585 atomic weight of K=39 ?

Identify the gas evolved in the following reaction when : a few crystals of KNO3 are heated in a hard glass test tube.

Cobalt salt+ KNO_(2)+CH_(3)COOHto yellow ppt.the yellow precipitate is:

12.25 g of KClO_3 and 5.85 g of NaCl ar heated together. The residue obtained at the end of burning is dissolved in water to prepare a 500 mL solution. To the solution obtained, excess of AgNO_3 is added. Find the moles of white precipitate formed. Also find the molarity of the solution after filtering out the precipitate with respect to NaNO_3 and KNO_3 (molecular mass of KClO_3 is 122.5 and that of NaCl is 58.50)

CoCl_(2) + KNO_(2) + CH_(3)COOH to [X] +H_(2)O +KCl + CH_(3)COOK +NO (Unbalenced equation)