What is the concentration if sugar `(C^(12)H_(22)O_(11)) ` in `mol L^(-1)` if its 20g are dissolve in enough water to make a final volume upto 2L?

A sugar syrup of weight 214.2g contains 34.2g of sugar (C_(12)H_(22)O_(11)) . Calculate (i) Molality and (ii) Mole fraction of sugar in syrup.

Calculate mass of 2.7moles of C_(12)H_(22)O_(11) (molar mass = 342 g/ mol)

The reaction 2 N _(2) O _(5) (g) to NO _(2) (g) + O _(2) (g) takes place in a closed contaner. It is found that the concentration of NO _(2) increases by 1. 6 xx 10 ^(-2) mol L ^(-1) in four seconds . Calculate the rate of change of concentration of N _(2) O _(5).

The decomposition of N_2O_5 in CC1_4 at 318K has been studied by monitoring the concentration of N_2O_5 in the solution. Initially the concentration of N_2O_5 is 2.33 mol L^(-1) and after 184 minutes, it is reduced to 2.08 mol L^(-1) . The reaction takes place according to the equation 2 N_2O_5 (g) rarr 4 NO_2 (g) + O_2 (g) Calculate the average rate of this reaction in terms of hours, minutes and seconds. What is the rate of production of NO_2 during this period?

The time for half life period of a certain reaction A rarr Products is 1 hour. When the initial concentration of the reactant ‘A’ is 2.0 mol L^-1 , how much time does it take for its concentration to come from 0.50 to 0.25 mol L^-1 ? if it is a zero order reaction?

A vessel of uniform cross-section of length 500 cm as shown in figure is divided in two parts by a weightless and frictionless piston one part contains 5 moles of He(g) and other part 2 moles of H_(2)(g) and 4 moles of O_(2)(g) added at the same temperature and pressure in which reaction takes place finally vessel cooled to 300 K and 1 atm. What is the length of He compartment? (Assume volume of piston and vol. of H_(2)O(l) formed are negligible)

A solution of glycerol (C_(3) H_(8) O_(3)) in water as prepared by dissolving some glycerol in 500 g of water. This solution has a boiling point of 100 . 42^(@) C. What mass of glycerol was dissolved to make the solution ? K_(b) for H_(2) O = 0 . 512 K kg mol^(-1)

What mass of H_(2)C_(2)O_(4). 2H_(2)O (mol.mass=126) should be dissoved in water to prepare 250mL of centinormal solution which act as a reducing agent?

An aqueous solution of sucrose ( C_(12)H_(22)O_(11) ) having a concentration of 34.2gram/ litre has an osmotic pressure of 2.38 atmospheres at 17^(@) C. For an aqurous solution of glucose ( C_(6)H_(12)O_(6) ) to be isotonic with this solution , its concentration should be :

4.0 g of NaOH and 4.9 g of H_(2)SO_(4) are dissolved in water and volume is made upto 250 mL. The pH of this solution is: