In this reaction, the chromium is reduced, from cr6+ to cr3+, causing a color change in the solution, signaling the endpoint. determine the mass percent ethanol in a 40.0 g blood sample, if the sample required 22.6 ml of 0.05 m k2cr2o7 to react completely with all the ethanol answers
Answers: 2
Chemistry, 22.06.2019 18:30, kate3887
When the chemicals iron sulfide (fes) and hydrochloric acid (hcl) are combined, bubbles appear from the mixture. 1. does the appearance of bubbles indicate a physical or chemical change? 2. why do the bubbles indicate this change? 3. what property is this?
Answers: 1
In this reaction, the chromium is reduced, from cr6+ to cr3+, causing a color change in the solution...
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