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Answer the following: 1: a) . Breathalyzers determine the alcohol content in a person’s breath by a...

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Chemistry

Answer the following:

1: a) . Breathalyzers determine the alcohol content in aperson’s breath by a redox reaction using dichromate ions (theunbalanced reaction is shown below). C2H5OH + Cr2O7 2− → CH3CO2H +Cr3+ a. Determine the number of electrons transferred in this redoxreaction. b. Determine the concentration (in M) of Cr3+ in 50.0mLof solution at half the Canadian legal blood alcohol concentrationlimit (BAC, limit is 0.08 mg/mL).

b) The Keq for the reaction between strontium metal and titaniumions (shown below) is 4.0x1042. Calculate Eo for astrontium-titanium battery. Sr(s) + Ti2+(aq) ⇌ Sr2+(aq) + Ti(s)

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