Topics: Fundamentals of electrochemistry; Electrochemical cells Use general chemistry rules for significant figures.
2. (13 pts) Calculate Ecell for the following galvanic cell:
Pt(s) | Cr2+ (0.20 M), Cr3+ (0.0030 M) || Pb2+ (0.15 M) | Pb(s)
Pb2+ + 2e ⇌ Pb(s) EPb° = –0.1263 V
Cr3+ + e ⇌ Cr2+ ECr° = –0.424 V

Achemistry student weighs out 0.306 g of citric acid (h3c6h5o7), a triprotic acid, into a 250 ml volumetric flask and dilutes to the mark with distilled water. he plans to titrate the acid with 0.1000 m naoh solution. calculate the volume of naoh solution the student will need to add to reach the final equivalence point. be sure your answer has the correct number of significant digits.

Which of the following is most likely true about water in chemical solutions?

Which of the following are correct values for the ideal gas laws constant r