The enthalpy of hydrogenation of cyclohexene is 119 5 kJ mol

A chemical industry generates wastewater that contains ethanol 130 mg L and methanoic or formic acid 400 mg L If the discharge flow is 80 L s what will be the BOD of the wastewater due to these two substances B water contains a concentration of sulfate ions of the order of 1 0 x 10 3 M and of carbonate ions of 1 0 x 10 5 M It is desired to precipitate the sulfate as strontium sulfate and for this SrCl2 0 is used 1 mol dm3 a Will this procedure work Prove with calculations Data Kps 5 6 x 10 10 for strontium carbonate and 3 4 x 10 7 for strontium sulfate

In an aqueous solution of volume 500 ml when the reaction 2Ag Cu Cu 2Ag reaches equilibrium the concentration of Cu ions is x molar To this solution 500 ml of water is added At the new equilibrium the concentration of Cu ion would be A 2x molar 1 C less than x molar 2 B between x and 2x molar D between 0 005x molar and 0 5x molar

8 Calculate the ratio of pH of a solution containing 1 mole of CH COONa 1 mole of HCI per litre and of other solution containing 1 mole CH COONa 1mole of acetic acid per litre 1 1 1 2 2 1 3 1 2 4 2 3

6 In a 0 25 L tube dissociation of 4 mol of NO takes place If its degree of dissociation is 10 The value of K for reaction 2 NO N O is 1 18 3 7 6 16 4 8 1 32 CROOCO 52

Question 20 Given that at a certain temperature in a 1 5L vessel 5 0 mole of A 7 0 mole of B and 0 1 mole of C are present Then the value of equilibrium constant for the reaction A B 2C Heat is about a 7 22 x 10 5 b 2 31 10 4 c 7 22 10 4 d 6 11 x 105

1 0 litre of solution which was in equilibrium with solid mixture of AgCl and Ag CrO was found to contain 1x 10 moles of Ag ions 1 0 x 10 moles of Cl ions and 8 0 x 10 moles of Cro ions Ag ions are added slowly to the above mixture keeping volume constant till 8 0 x 10 7 moles of AgCl got precipitated 3 Find the 4g left in the solution after precipitation of AgCl A 15 10 M B 5 10 M C 10 M D 10 M 4 How many moles of Ag CrO were precipitated A 7 68 x 10 moles C 3 20 x 10 moles ragraph For Questions 35 36 B 7 68 x 10 moles D 3 20 x 10 moles

In a 1 0 L aqueous solution when the reaction 2 AB g Cu a Cu 2Ag reaches equilibrium Cu xM A4g M If volume of solution is doubled by adding water then at equilibrium A Cu M 48 MB Cu M 48 M 2 C Cu M 48 MC Cu M 48 M 2

Solubility product of silver bromide is 5 0 x 10 13 The quantity of potassium bromide molar mass taken as 120 g mol to be added to 1 litre of 0 05 M solution of silver nitrate to start the precipitation of AgBr is AIEEE 2010 1 5 0 10 8 g 3 1 2 x 10 9 g 2 1 2 x 10 1 g 4 6 2 x 10 5 g

The following graphs represent the behavior of BaCO3 under different circumstances In each case the vertical axis indicates the solubility of the BaCO and the horizontal axis represents the concentration of added reagent Solubility O Solubility Conc 1 Which of the following is are correct Solubility Conc ii All of these Conc Curve i represents addition of Na CO3 to a solution containing BaCO3 Curve ii represents addition of NaNO3 to a solution containing B CO Curve iii represents addition of HNO3 to a solution containing BaCO

How many of the following reactions at equilibrium will not show change in their equilibrium constants on changing total pressure Assume temperatu as constant a N g 3H g 2NH3 g b N g O2 g 2NO g c H g Cl g 2HCl g d CS g 30 g CO g 2SO g e SO3 g NO g SO g NO g f 4NH3 g 50 g 4NO g 6H O g g H O g CO g H g CO g