`psiw = psis+psip`. why solute potential is always negative?

A binary liquid solution is prepared by mixing n-heptane and ethanol. Which one of the following statements is correct regarding the behaviour of the solution? a)The solution is non-ideal, showing negative deviation from Raoult's Law b)The solution is non-ideal, showing positive deviation from Raoult's Law c)n-heptane shows positive deviation while ethanol shows negative deviation from Raoult's Law d)The solution formed is an ideal solution

Pure water is saturated with pure solid AgCl. A silver electrode is placed in the solution and the potential is measured against normal calomel electrode at 25^(@)C . This experiment is then repeated with a saturated solution of AgI. If the difference in potential in the two cases is 0.177V, what is the ratio of solubilities of AgCl and AgI at the temperature of experiment ?

A rectangular conductor of length and area of cross section and electron density .n, is shown below. . When the face Y is given positive potential and X negative potential what will happen to the electrons inside the block

State as to why a solution of Na_2CO_3 is alkaline

Psiw=Psis+Psip Expand the equation.

psi is the solution of Schrodinger's wave equation. Give the significance of psi and psi^2 .

Why the speed of the object can never be negative?