Chemistry

Cu(s) + Sn²⁺(0.001M) ® Cu²⁺ (0.01M) + Sn(s)

The Gibbs free energy change for the above reaction at 298 K is x * 10^-1 KJmol^-1. The value of x is __________. (nearest integer)

[Given : $E_{C{u}^{2+}/Cu}^{\Theta }$ 0.34V; $E_{S{n}^{2+}/Sn}^{\Theta }$ =96500 Cmol^-1] 

40% of HI undergoes decomposition to H₂ and I₂ at 300K. $\Delta G^{\Theta }$ for this decomposition reaction at one atmosphere pressure is_____________J mol^-1 (nearest integer)

(Use R = 8.31 JK^-1 mol^-1; log 2= 0.3010, In 10 = 2.3, log 3 = 0.477)

The osmotic pressure exerted by a solution prepared by dissolving 2.0g of protein of molar mass 60 kg mol^-1 in 200 mL of water at 27°C is_______Pa. (nearest integer)

(Use R = 0.083 L bar mol^-1 K^-1)

A fish swimming in water body when taken out from the water body is covered with a film of water of weight 36g. When it is subjected to cooking at 100°C, then the internal energy for vaporization in kJ mol^-1 is_____________. (nearest integer)

[Assume steam to be an ideal gas. Given  ${\Delta }_{vap}{H}^{\Theta }$ for water at 373K and 1 bar is 41.1 kJ mol^-1; R = 8.31 JK^-1mol^-1]

Which statement is not true with respect to nitrate ion test?

Amongst SF₄, XeF₄, CF₄ and H₂O, the number of species with two lone pairs of electrons is___________.

In a solid AB, A atoms are in ccp arrangement and B atoms occupy all octahedral sites. If two atoms from the opposite face are removed, then the resultant stoichiometry of the compound is A_xB_y. The value of x is ___________(nearest integer)

A chemical which stimulates the secretion of pepsin is

CNG is an important transportation fuel. When 100g CNG is mixed with 208g oxygen in vechicles, it leads to the formation of CO₂ and H₂O and produces large quantity of heat during this combustion, then  the amount of carbon dioxide produced in germs is ______.

(nearest integer)

[Assume CNG to be methane]

Which of the following is a water soluble vitamin, that is not excreted easily?