5.61 g of KOH is dissolved in 200ml of water in a styrofoam calorimetre. The temperature rise is 9 degree Celsius. Calculate the
a)the number of joules absorbed by the water due to the dissolving of KOH.
b) the number of moles of KOH dissolved in the reaction
c) the heat of the reaction in kJ/mol for the dissolving of potassium hydroxide in water
PLEASE HELP ME!!
Answers
5.61 g of KOH is dissolved in 200ml of water in a styrofoam calorimetre. The temperature rise is 9 degree Celsius. Calculate the
a)the number of joules absorbed by the water due to the dissolving of KOH.
b) the number of moles of KOH dissolved in the reaction
c) the heat of the reaction in kJ/mol for the dissolving of potassium hydroxide in water
5.61 g of KOH is dissolved in 200ml of water in a styrofoam calorimetre. The temperature rise is 9 degree Celsius. Calculate the
a)the number of joules absorbed by the water due to the dissolving of KOH.
b) the number of moles of KOH dissolved in the reaction
c) the heat of the reaction in kJ/mol for the dissolving of potassium hydroxide in water
5.61 g of KOH is dissolved in 200ml of water in a styrofoam calorimetre. The temperature rise is 9 degree Celsius. Calculate the
a)the number of joules absorbed by the water due to the dissolving of KOH.
b) the number of moles of KOH dissolved in the reaction
c) the heat of the reaction in kJ/mol for the dissolving of potassium hydroxide in water
PLEASE HELP ME!!
PLEASE HELP ME!!
PLEASE HELP ME!!
Explanation:
[KOH]=[K
+
]=[OH
−
]=
56×200
0.561×1000
=0.050M
[H
+
]=
OH
−
]
K
w
=
0.05
10
−14
=2.0×10
−13
pH=−log[H
+
]=−log(2.0×10
−13
)=12.699