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Enthalpy of solution describes the net change in heat when a solute is dissolved in a solvent. Specifically, the standard enthalpy of solution is the heat change when one mole of solute is completely dissolved in a solvent to form a solution concentration of 1 mol per dm3 under standard conditions.
The net change in heat can be broken down into the sum of two heats. First, the solute crystals must break from their lattice. This is known as the lattice enthalpy and its reversal is typically endothermic. Second, the ions are solvated (or hydrated in the case of aqueous solutions), which is typically an exothermic step. Depending on the magnitude of each of these factors, the sum can lead to a positive or negative enthalpy of solution.
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What does the negative sign on the value of an enthalpy of formation indicate?
A negative enthalpy of formation indicates that energy is evolved.
What does no solution mean in math?
it means no solution. no answer. cant be answered
Does the solution is the empty set mean there is no solution?
Yes, empty set means null which is no solution.
Why is it no solution when 2x plus 7 equals 1?
Not sure what you mean; that equation certainly has a solution.
What does it mean to be a solution to an equation?
A solution to an equation is a set of values for the variables in the equation which make it true.
