Question

How does the molarity change if the volume is constant but more solute is added?

Molarity (M) = moles solute liter solution 1. Select cobalt(II) nitrate from the pull-down menu, and select "show values". Adjust the solute and solvent amounts and record the results in the table below. Hitting the reset button will return the solute and solution volume sliders to 0.500 moles and 0.500 L, respectively. Complete the table. Cobalt(11) nitrate Solute Amount Solution Volume Molarity 0.500 mol 0.500 L 0.999 M 1.000 mol 0.500 L 0, 201 M 0.500 mol 1.000 L 0.hoo M. 2.498M 0.500 mol 0.200 L 2. How does the molarity change if the volume is constant but more solute is added? 3. How does the molarity change if the amount of solute is constant but the volume is increased? 4. Select several other solutes and adjust the amounts. In general, how does the appearance of the solution change as the solution becomes more concentrated? 5. Select copper sulfate. What is the maximum concentration for this solution? What happens if you add more solute once the solution is saturated?

Answer 1

2) we know that,

Molarity is defined as the number of moles of solute present in volume of solution in liters.

So, molarity is directly proportional to the number of moles of solute and inversely proportional to the amount of volume of solution.

By taking volume as constant, molarity is directly proportional to the number of moles of solute.

Also, number of moles is defined as the amount of solute devided by molar mass.

Hence,  As the amount of solute increases, number of moles increases and Molarity of solution increases.

3) similarly from the definition of molarity,

As the volume of solution increases by keeping number of moles of solute constant can decreasdecreases the molarity of the solution.