A student predicts that a solution of ethanol (C2H5OH) and water will have a lower density at room temperature than that of pure
2 answers:
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Answer:
The concentration of KBr is
Explanation:
From the question we are told that
The mass of KBr is
The molar mass of KBr is
Volume of water is
This implies that the volume of the solution is
The number of moles of KBr is
Substituting values
The concentration of KBr is mathematically represented as
Answer : The correct option is, (C) 0.675 M
Explanation :
Using neutralization law,
where,
= concentration of
= 13.5 M
= concentration of diluted solution = ?
= volume of
= 25.0 ml = 0.0250 L
conversion used : (1 L = 1000 mL)
= volume of diluted solution = 0.500 L
Now put all the given values in the above law, we get the concentration of the diluted solution.
Therefore, the concentration of the diluted solution is 0.675 M