Problemas
What is the molarity of a methanol solution that contains 25 g of methanol in 3.5 L of a solution?The molar mass of methanol is 32g/mol mol=square (Write answer rounded to 2 decimal places and do not put any letters in.) molarity = square (Write answer rounded to 2 decimal places and do not put any letters in.) POSSIBLE POIN
Solución
Jorgeveterano · Tutor durante 12 años
Verificación de expertos
4.5 (275 votos)
Responder
To find the molarity of the methanol solution, we need to follow these steps:<br /><br />1. Calculate the number of moles of methanol.<br />2. Divide the number of moles by the volume of the solution in liters.<br /><br />Given information:<br />- Mass of methanol = 25 g<br />- Volume of the solution = 3.5 L<br />- Molar mass of methanol = 32 g/mol<br /><br />Step 1: Calculate the number of moles of methanol.<br />Moles of methanol = Mass of methanol / Molar mass of methanol<br />Moles of methanol = 25 g / 32 g/mol<br />Moles of methanol = 0.78125 mol<br /><br />Step 2: Calculate the molarity of the methanol solution.<br />Molarity = Moles of methanol / Volume of the solution in liters<br />Molarity = 0.78125 mol / 3.5 L<br />Molarity = 0.22464 M<br /><br />Rounding the answer to 2 decimal places, the molarity of the methanol solution is 0.22 M.
Haz clic para calificar: