【Test Your Knowledge】Basic Chemical Engineering Knowledge (11)
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Write the answers directly: 1. In the heat exchange between the fluids on either side of the partition, the flow patterns of the fluids are _______, ______, ______, ________. 2. Among the factors that affect chemical equilibrium, when pressure increases, the equilibrium shifts towards ___________, while when pressure decreases, the equilibrium shifts towards ________________. 3. The thermoelectric properties of a thermocouple are determined by ____________ and _________. 4. The vapor-liquid equilibrium relationship for n theoretical tray plates refers to ________. A. yn+1 and xn B. yn and xn C. yn-1 and xn D. yn and xn-1 5. If the feed composition of the distillation column changes and the light component increases, then ________. A. Drop in reactor temperature B. Rise in reactor temperature C. Rise in reactor pressure D. Rise in top temperature 6. Which of the following substances is not a pure substance? __________ A. Ammonia gas B. Concentrated hydrochloric acid C. Dry ice D. Potassium chlorate Answer key: 1. Co-current, Counter-current, Cross-flow, Mixed flow 2. Direction of decrease in molecular count, Direction of increase in molecular count 3. Chemical composition of the electrode materials of thermocouples, Physical properties 4. B 5. A 6. B Did you get them right? This post was last edited by zhangyong6404 on 2009-3-25 17:46.]
The ways fluid can flow include co-current flow, counter-current flow, condensation, and evaporation. An increase in pressure shifts the equilibrium in the direction of reduced volume； A decrease in pressure shifts the equilibrium in the direction of increased volume. The thermoelectric properties may depend on resistivity and diameter. The equilibrium condition means that as the proportion of the light component increases, the temperature at the bottom of the tower decreases; concentrated hydrochloric acid is a mixture
Co-current, counter-current, condensation, and evaporation – moving in the direction of decreasing volume； Moving in the direction of increased volume; the thermoelectric properties may depend on resistivity and diameter C A B
The ways fluid can flow include co-current flow, counter-current flow, condensation, and evaporation. An increase in pressure shifts the equilibrium in the direction of reduced volume； A decrease in pressure shifts the equilibrium in the direction of increased volume. The thermoelectric properties may depend on resistivity and diameter. The equilibrium condition means that as the proportion of the light component increases, the temperature at the bottom of the tower decreases; concentrated hydrochloric acid is a mixture
co-current； backflow ； condensation ； Evaporation: the direction of volume reduction ； Direction of volume increase, resistivity ； Diameter C A B
1. Co-current, counter-current, cross-current, mixed flow 2. An increase in pressure shifts the equilibrium in the direction of reduced volume； The equilibrium shifts in the direction of increased volume as pressure decreases. 3. Resistivity and length-to-diameter ratio. 4. C. 5. A. 6. B
1. Co-current, counter-current, cross-flow, mixed flow 2. Direction of volume reduction, direction of volume increase 3. Materials of the two electrodes and temperatures at both ends 4. B 5. A 6. B
1. The flow patterns of fluids include co-current flow, counter-current flow, condensation, and evaporation. 2. An increase in pressure shifts the equilibrium in the direction of reduced volume； As the pressure decreases, the equilibrium shifts in the direction of increased volume. 3 The thermoelectric properties may depend on resistivity and diameter. 4C 5A 6A
Co-current, counter-current, condensation, and evaporation – moving in the direction of decreasing volume； Moving in the direction of increased volume: resistivity and diameter C A B
1. Co-current, counter-current, cross-current, baffled flow. 2. The direction of volume reduction, the direction of volume increase. 3. Material, temperature 4.B 5.A 6.B
Hehe, it’s really true that different fields are like mountains apart – even after seeing the answer, I still don’t understand.
Co-current, counter-current, condensation, and evaporation – moving in the direction of decreasing volume； Moving in the direction of increased volume: resistivity and diameter C A B
The ways fluid can flow include co-current flow, counter-current flow, condensation, and evaporation. An increase in pressure shifts the equilibrium in the direction of reduced volume； A decrease in pressure shifts the equilibrium in the direction of increased volume. The thermoelectric properties depend on the materials of the two electrodes and the temperatures at their ends. The equilibrium relationship indicates that an increase in the light component of C leads to a decrease in the temperature at the bottom of the tower; concentrated hydrochloric acid is a mixture
I wanted to answer, but I couldn’t help looking at the answers below. This way of setting questions is great; it allows us to assess the effectiveness of everyone’s regular learning and knowledge accumulation. I’ve learned something.
1. Co-current, counter-current, cross-flow, mixed flow 2. Direction of volume reduction, direction of volume increase 3. Materials of the two electrodes and temperatures at their ends 4. B5D (uncertain) 6. B
1 Co-current, counter-current; condensation, evaporation 2 Moving in the direction of decreasing volume； Move in the direction of increased volume 3 Materials of the two electrodes Temperature c A B
Co-current, counter-current, cross-current, and mixed-flow – moving in the direction of decreasing volume； Moving in the direction of increased volume; the thermoelectric properties may depend on resistivity and diameter C A B
1. Co-current, counter-current, cross-flow, mixed flow 2. Direction of volume reduction, direction of volume increase 3. Material of the heat electrode and cold junction temperature 4. B 5. A 6. B
Co-current, counter-current, condensation, and evaporation – volume reduction； Increased volume, resistivity, and diameter C A B
1. Co-current, counter-current, condensation, evaporation 2. Direction of volume reduction, direction of volume increase 3. Resistivity and diameter 4. B 5. A 6. B
It was only after reading the question that I realized I had forgotten all that textbook knowledge