For each of the following solutions, the mass of the solute is given, followed by the total volume of solution prepared. Calculate the molarity.
a. 5.0 g of BaCl2; 2.5 L
b. 3.5g of Kl3r:75mL
c. 21.5 g of Na2CO3; l75mL
d. 55 g of CaCl2; 1.2 L
(a)
Interpretation:
The molarity of the given solution 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,
The mass of
The molar mass of
The number of moles is calculated by the formula,
Substitute the values of mass and molar mass of
(b)
Interpretation:
The molarity of the given solution 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,
(c)
Interpretation:
The molarity of the given solution 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,
(d)
Interpretation:
The molarity of the given solution 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,
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