(a)
Interpretation:
The new molarity after the addition of water is to be calculated.
Concept Introduction:
The
The number of moles is calculated by the formula,
The molarity is calculated by the formula,
Answer to Problem 56QAP
The new molarity that results when
Explanation of Solution
The initial volume and molarity of
The conversion of units of
The number of moles of a solute is calculated by the formula,
Substitute the values of initial volume and molarity of
It is given that
The conversion of units of
Thus, the total volume is calculated by the formula,
Substitute the values of initial volume and volume of water added in the equation (2).
The new molarity of the solution is calculated by the formula,
Substitute the values of number of moles of solute and final volume in the equation (3).
Therefore, the new molarity that results when
(b)
Interpretation:
The new molarity after the addition of water is to be calculated.
Concept Introduction:
The atomic mass of an element is defined as the sum of number of protons and number of neutrons. Molar mass of an element is determined from atomic mass of an element.
The number of moles is calculated by the formula,
The molarity is calculated by the formula,
Answer to Problem 56QAP
The new molarity that results when
Explanation of Solution
The initial volume and molarity of
The conversion of units of
The number of moles of a solute is calculated by the formula,
Substitute the values of initial volume and molarity of
It is given that
The conversion of units of
Thus, the total volume is calculated by the formula,
Substitute the values of initial volume and volume of water added in the equation (2).
The new molarity of the solution is calculated by the formula,
Substitute the values of number of moles of solute and final volume in the equation (3).
Therefore, the new molarity that results when
(c)
Interpretation:
The new molarity after the addition of water is to be calculated.
Concept Introduction:
The atomic mass of an element is defined as the sum of number of protons and number of neutrons. Molar mass of an element is determined from atomic mass of an element.
The number of moles is calculated by the formula,
The molarity is calculated by the formula,
Answer to Problem 56QAP
The new molarity that results when
Explanation of Solution
The initial volume and molarity of
The number of moles of a solute is calculated by the formula,
Substitute the values of initial volume and molarity of
It is given that
The conversion of units of
Thus, the total volume is calculated by the formula,
Substitute the values of initial volume and volume of water added in the equation (2).
The new molarity of the solution is calculated by the formula,
Substitute the values of number of moles of solute and final volume in the equation (3).
Therefore, the new molarity that results when
(d)
Interpretation:
The new molarity after the addition of water is to be calculated.
Concept Introduction:
The atomic mass of an element is defined as the sum of number of protons and number of neutrons. Molar mass of an element is determined from atomic mass of an element.
The number of moles is calculated by the formula,
The molarity is calculated by the formula,
Answer to Problem 56QAP
The new molarity that results when
Explanation of Solution
The initial volume and molarity of
The conversion of units of
The number of moles of a solute is calculated by the formula,
Substitute the values of initial volume and molarity of
It is given that
The conversion of units of
Thus, the total volume is calculated by the formula,
Substitute the values of initial volume and volume of water added in the equation (2).
The new molarity of the solution is calculated by the formula,
Substitute the values of number of moles of solute and final volume in the equation (3).
Therefore, the new molarity that results when
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Chapter 15 Solutions
INTRODUCTORY CHEMISTRY
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- On Easter Sunday, April 3, 1983, nitric acid spilled from a tank car near downtown Denver, Colorado. The spill was neutralized with sodium carbonate: 2HNO3(aq)+Na2CO3(aq)2NaNO3(aq)+H2O(l)+CO2(g) a. Calculate H for this reaction. Approximately 2.0 104 gal nitric acid was spilled. Assume that the acid was an aqueous solution containing 70.0% HNO3 by mass with a density of 1.42 glcm3. What mass of sodium carbonate was required for complete neutralization of the spill, and what quantity of heat was evolved? (Hf for NaNO3(aq) = 467 kJ/mol) b. According to The Denver Post for April 4, 1983, authorities feared that dangerous air pollution might occur during the neutralization. Considering the magnitude of H, what was their major concern?arrow_forward34. For each of the following solutions, the number of moles of solute is given, followed by the total volume of the solution prepared. Calculate the molarity of each solution. a. 0.754 mol KNO; 225 mL b. 0.0105 in of CaCl; 10.2 mL c. 3.15 mol NaCl; 5.00 L d. 0.499 mol NaBr; 100. mLarrow_forwardWhat is the difference between a solute and a solvent?arrow_forward
- When a solution is diluted by adding additional solvent, the concentration of solute changes hut the amount of solute present does not change. Explain. Suppose 250. mL of water is added to 125 mL of 0.55 1 M NaCl solution. Explain how you would calculate the concentration of the solution after dilution.arrow_forwardA solution is formed by mixing 1 gal ethanol with 10 gal gasoline. Identify the solvent and the solute.arrow_forward
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