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Author Question: A voltage difference of 18.7 mV is measured when a blood sample is being analyzed for pH. What is ... (Read 106 times)

Beheh

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on: Jul 16, 2018
A voltage difference of 18.7 mV is measured when a blood sample is being analyzed for pH. What is the resultant pH of the blood?
 
  a. 7.54 c. 7.14
  b. 7.34 d. 8.71

Question 2

A blood sample is analyzed within a Sanz electrode. The voltage difference = 44.90 mV. What is the resultant pH of this blood?
 
  a. 7.11 c. 7.57
  b. 7.34 d. 8.18


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s.meritte

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Reply #1 on: Jul 16, 2018
Answer to Question 1

ANS: C
A voltage of 61.5 mV is developed for every pH unit difference between the sample and the measuring electrode, which remains 6.84. Therefore, the voltage difference is 18.7 mV divided by 61.5 mV, or 0.30. The resultant pH can be calculated as 6.84 + 0.30 = 7.14.

Answer to Question 2

ANS: C
A voltage of 61.5 mV is developed for every pH unit difference between the sample and the measuring electrode, which remains 6.84. Therefore, the voltage difference is 44.90 mV divided by 61.5 mV, or 0.73. The resultant pH can be calculated as 6.84 + 0.73 = 7.57.


Beheh

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Reply 2 on: Jul 16, 2018
Great answer, keep it coming :)

zacnyjessica

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Reply 3 on: Yesterday
Wow, this really help

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