CHEM Test 4 (11th) 21-22

 $\frac{n_{solute}}{L_{solution}}$  

• % w/w

• % w/v

• Molarity

 $\frac{g\ solute}{g\ solution}\cdot100$  

• % w/w

• % w/v

• Molarity

 $\frac{g\ solution}{mL\ solution}\cdot100$  

• % w/w

• % w/v

• Molarity

5 mol of HCl are dissolved in 1 L of solution. The concentration of the solution is

• 5 M

• 2.5 M

• 10 M

A 3M solution of KCl will have

• $\frac{2\ mol\ KCl}{L\ solution}$

• $\frac{3\ mol\ KCl}{L\ solution}$

• $\frac{1\ mol\ KCl}{L\ solution}$

2,5 mol of H₂SO₄ are dissolved in 500 mL of solution. The molarity of the solution will be

• 2,5 M

• 5 M

• 0,5 M

How many moles of NaCl are needed to prepare 200 mL of solution 2,5 M?

• 0,5 mol NaCl

• 12,5 mol NaCl

• 1 mol NaCl

What volume of solution 1,5 M can be prepared with 10 mol of K₂S?

• 15 L

• 3,33 L

• 6,66 L

150 g of H₂SO₄ are dissolved in 400 mL of solution. Calculate its molarity

• 0,61 M

• 3,83 M

• 3,06 M

How many grams of HCl are needed to prepare 800 mL of solution 0,6 M ?

• 8,76 g HCl

• 13,15 g HCl

• 17,52 g HCl