Which of these is true about a pH meter?
2 answers:
Answer: Option (D) is the correct answer.
Explanation:
An electronic device which is used to measure hydrogen ion activity is known as a pH meter.
That is, a pH meter is useful in detecting or knowing the acidity (due to ions) or alkalinity (due to
ions) of a solution.
Thus, we can conclude that out of the given options it is true about a pH meter that it can be used in any acid-base titration.
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Answer:
the activation energy Ea = 179.176 kJ/mol
it will take 7.0245 mins for the same food to cook in an open pot of boiling water at an altitude of 10000 feet.
Explanation:
From the given information
Thus;
Because at 113.0°C; the rate is 7 time higher than at 100°C
Hence:
1.9459 =
Ea = 179.176 kJ/mol
Thus; the activation energy Ea = 179.176 kJ/mol
b)
here;
where ;
Now;
t = 7.0245 mins
Therefore; it will take 7.0245 mins for the same food to cook in an open pot of boiling water at an altitude of 10000 feet.