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Which solutions has concentration of 1M? The molar mass of sucrose is 342 gram. A solution containing?​

Sagot :

Francinenicolemanalaidn

Answer:

The most common unit of concentration is molarity, which is also the most useful for calculations involving the stoichiometry of reactions in solution. The molarity (M) of a solution is the number of moles of solute present in exactly 1 L of solution. Molarity is also the number of millimoles of solute present in exactly 1 mL of solution:

Equation 4.4

molarity =moles of soluteliters of solution=mmoles of solutemilliliters of solution

The units of molarity are therefore moles per liter of solution (mol/L), abbreviated as M. An aqueous solution that contains 1 mol (342 g) of sucrose in enough water to give a final volume of 1.00 L has a sucrose concentration of 1.00 mol/L or 1.00 M. In chemical notation, square brackets around the name or formula of the solute represent the concentration of a solute. So

[sucrose] = 1.00 M

is read as “the concentration of sucrose is 1.00 molar.” The relationships between volume, molarity, and moles may be expressed as either

Explanation:

Equation 4.5

VLMmol/L=L(molL)= moles

or

Equation 4.6

VmLMmmol/mL=mL(mmolmL)= mmoles

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