Concentrations of Solutions Test

A solution of AlBr3 is diluted from its original volume of 1.3 L by adding 0.7 L of solvent. If its new concentration is 0.48 M, what was the original concentration of this solution?

• A. 0.739 M

• B. 0.805 M

• C. 0.879 M

• D. 0.960 M

A solution of Ga(ClO4)3 is diluted from its original concentration of 2.0 M to a new concentration of 1.9 M. If its new volume is 0.53 L, what was the original volume of the concentrated solution?

• A. 0.357 L

• B. 0.408 L

• C. 0.443 L

• D. 0.504 L

How many moles of V(ClO4)3 are in 0.919 L of 2.70 M solution?

• A. 1.66 mol

• B. 1.94 mol

• C. 2.31 mol

• D. 2.48 mol

0.4 mol of Na3PO4 are dissolved in 1.04 L of water. What is the concentration of this solution in molarity?

• 0.254 M

• 0.308 M

• 0.342 M

• 0.385 M

A solution of BaCl2 is diluted from its original volume of 1 L by adding 1 L of solvent. If its new concentration is 0.21 M, what was the original concentration of this solution?

• 0.379 M

• 0.420 M

• 0.500 M

• 0.550 M

A solution of K2CO3 is diluted from its original concentration of 2.9 M to a new concentration of 2.4 M. If its new volume is 1 L, what was the original volume of the concentrated solution?

• A. 0.745 L

• B. 0.828 L

• C. 0.894 L

• D. 0.968 L

A solution of Mg(ClO4)2 at 2.86 M is diluted from its original volume of 0.7 L by adding 0.3 L. What is the resulting concentration of this solution?

• A. 2.00 M

• B. 2.22 M

• C. 2.34 M

• D. 2.62 M

A solution of Mg(NO3)2 is diluted from its original concentration of 0.60 M to a new concentration of 0.458 M. If its new volume is 2.0 L, what was the original volume of the concentrated solution?

• A. 1.19 L

• B. 1.34 L

• C. 1.53 L

• D. 1.68 L

A solution of Zn(ClO4)2 is diluted from its original concentration of 1.84 M to a new concentration of 1 M. If its new volume is 1.0 L, what was the original volume of the concentrated solution?

• A. 0.467 L

• B. 0.544 L

• C. 0.592 L

• D. 0.647 L

A solution of CuCl2 is diluted from its original concentration of 0.8 M to a new concentration of 0.3 M. If its new volume is 0.678 L, what was the original volume of the concentrated solution?

• A. 0.221 L

• B. 0.254 L

• C. 0.275 L

• D. 0.305 L