22 2021
Block:
1. A sample of high purity silicon is prepared by strongly heating a mixture...
Chemistry, 25.11.2021 14:00 tynitenaire
22 2021
Block:
1. A sample of high purity silicon is prepared by strongly heating a mixture of hydrogen and
silicon tetrachloride in a sealed tube:
SiCl4 + 2 H2 → Si + 4 HCI
If exactly 1.00g of silicon is required, what mass of Sicla and H2 must react?
Answers: 3
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Consider the reduction reactions and their equilibrium constants. cu+(aq)+e−↽−−⇀cu(s)pb2+(aq)+2e−↽−−⇀pb(s)fe3+(aq)+3e−↽−−⇀fe(=6.2×108=4.0×10−5=9.3×10−3 cu + ( aq ) + e − ↽ − − ⇀ cu ( s ) k =6.2× 10 8 pb 2 + ( aq ) +2 e − ↽ − − ⇀ pb ( s ) k =4.0× 10 − 5 fe 3 + ( aq ) +3 e − ↽ − − ⇀ fe ( s ) k =9.3× 10 − 3 arrange these ions from strongest to weakest oxidizing agent.
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Calcium carbonate decomposes at high temperatures to give calcium oxide and carbon dioxide as shown below. caco3(s) cao(s) + co2(g) the kp for this reaction is 1.16 at 800°c. a 5.00 l vessel containing 10.0 g of caco3(s) was evacuated to remove the air, sealed, and then heated to 800°c. ignoring the volume occupied by the solid, what will be the mass of the solid in the vessel once equilibrium is reached?
Answers: 1
Chemistry, 23.06.2019 05:50
Which of the following is not a characteristic of s waves?
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