Compare the value of psi_w (water potential) | vedclass

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(A) Water potential $(\psi_w)$ decreases with the addition of solute particles. $NaCl$ is an ionic compound that dissociates into two ions ($Na^+$ and

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Lower

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(A) Water potential $(\psi_w)$ decreases with the addition of solute particles. $NaCl$ is an ionic compound that dissociates into two ions ($Na^+$ and $Cl^-$) in solution,whereas sucrose is a non-electrolyte and does not dissociate. Since $1 	ext{ g}$ of $NaCl$ (molar mass $\approx 58.5 	ext{ g/mol}$) contains more moles of particles than $1 	ext{ g}$ of sucrose (molar mass $\approx 342 	ext{ g/mol}$),the solute concentration in the $NaCl$ solution is significantly higher. Furthermore,the dissociation of $NaCl$ further increases the number of solute particles,leading to a greater decrease in water potential. Therefore,the $\psi_w$ of a $1 	ext{ g}$ $NaCl$ solution will be lower than that of a $1 	ext{ g}$ sucrose solution.

Compare the value of $\psi_w$ (water potential) of a $1 \text{ g}$ $NaCl$ solution with that of a $1 \text{ g}$ sucrose solution.

Similar Questions

Which one of the following statements is wrong?

$A-$ Positive value of turgor pressure is called ${\Psi _P}$.
$R-$ The more the solute molecules,the lower (more negative) is the ${\Psi _S}$.

Which one of the following statements is incorrect?

Identify the correct sentence:

What are the water potential and osmotic pressure of pure water?

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