What is true of a solution with a pH of 12
1 answer:
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Answer:
for the process is -375 kJ
Explanation:
- Given reaction is a combination of the two given elementary steps.
- Summation of change in standard enthalpy (
)of the two elementary reactions give
.
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=
Answer: a) is the limiting reagent
b) 0.27 g of will be produced.
Explanation:
To calculate the moles :
According to stoichiometry :
3 moles of require = 2 moles of
Thus 0.003 moles of will require=
of
Thus is the limiting reagent as it limits the formation of product and
is the excess reagent.
b) As 3 moles of give = 2 moles of
Thus 0.003 moles of give =
of
Mass of
Thus 0.27 g of will be produced.
0.050 litres of the water will be required to make a 3.91 M solution with 0.196 moles in it.
Explanation:
Data given:
moles of Cd = 0.196 Moles
Molarity of the solution = 3.91 M
Volume in litres =?
molarity is calculated by the formula:
molarity =
putting the values in the above formula and rearranging it for volume:
volume =
volume =
volume = 0.050 litres
0.050 litres of the water will be required to make a 3.91 M solution with 0.196 moles in it.
Molarity is the number of moles present in a given volume of solution which is given in litres. It is the measurement of the concentration of particular solute in a solution.