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What is the environmental impact of global hydrocarbon consumption (increased CO2 & CH4, climate change and its consequences)?
Write equations and explain reactions of alkanes – combustion, chlorination, cracking.
A solution of silver nitrate is prepared by dissolving 15.05 g of primary standard AgNO3 in enough solvent to make 1.0-L solution. How many milliliters of this solution will be needed to react with the following substances given below?
A) 50-mL solution of 0.018 M hydrosulfuric acid, H2S.
B) A solution containing 381-mg of dissolved barium chloride dihydrate, BaCl2.2H2O.
Show solutions.
What is a state function? Is work a state function?
Stereoisomerism and different type that exist I.e. (geometry and optical) give simple and naturally occurring examples of each type of illustration your explanation, including structural formula and photograph of 3d Models of stereoisomerism
The enthalpy of formation of NH3(g) as per the following reaction is -46.11 kJ/mol at 298 K.
N₂(g) + 3H₂(g) 2 NH3(g)
Calculate the value of enthalpy of formation of NH3(g) at 100 °C. The Co (JK mol) values are given as: N₂(g) 29.12; H2(g) = 28.82; NH3(g) = 35.06. Assume the given heat capacity values to be temperature independent in the range.
a. A 25 cm3 sample of an aqueous solution of barium hydroxide, of concentration 0.146 mol dm3 was exactly neutralized by 28.7cm3 of aqueous nitric acid, according to the unbalanced equation:
Ba (OH)2 (aq) + HNO3(aq) ˗˗˗˗˗˗˗˗˃ Ba(NO3)2 (aq) + H2O (l)
i. Calculate the amount of nitric acid in terms molarity and in terms of number of moles
ii. Differentiate molarity and number of moles.
a. The equilibrium constant Kc of the reaction: H2 (g) + I2 (g) ˂˂˂˗˗˗˗˗˗˗˃˃˃˃ HI (g) is 54.3 at 430 oC. Starting with 6.0 moles of HI in a 1.0 dm-3 reaction vessel.
i. Calculate the concentrations of H2 (g), I2 (g) and HI (g) at equilibrium.
ii. If H2 (g) is added to the reaction vessel to increase its concentration to 2.0 M, determine the reaction quotient Q, then calculate the concentration of all the gases when the new equilibrium is re-established.
What is the [A-] when 50 ml of 0.1 M NaOH is added to the 100 ml solution mixture which is in 0.1 M HCl and 0.1 M acetic acid? (Ka =1.75*10-5)
Type of electronic transition
observed in following compounds (a)
->C-X (b) >C=O
