Chemistry, 06.03.2020 22:30 sky724

2H2(g)+O2(g) → 2H2O(g) 48. When H2(g) and O2(g) are mixed together in a rigid reaction vessel at 25°C, no reaction occurs. When the mixture is sparked, however, the gases react vigorously according to the equation above, releasing heat. Which of the following statements correctly explains why the spark is needed for the reaction to occur when the gases are originally at 25°C?(A) The reaction is not thermodynamically favorable at 25°C (B) AH° for the reaction has a large positive (C) AS° for the reaction has a large negative (D) The reaction has a large activation energy value at 25°C value at 25°C at 25°C.

Answers: 3

Show answers

Another question on Chemistry

Chemistry, 22.06.2019 09:30

What is the mass of 0.46 mol of mgcl2

Answers: 3

Answer

Chemistry, 22.06.2019 10:30

Aglow stick contains a glass vial with chemicals. when the glow stick is bent, the vial breaks and the chemicals react to produce a glow. a science student observes that a glow stick kept in the freezer glows for a longer duration than a glow stick kept at room temperature. what conclusion can be drawn based on the observation? be sure to note the outcome and test variables in the conclusion.

Answers: 1

Answer

Chemistry, 22.06.2019 21:30

Liquid ammonia is produced at high temperatures and under great pressure in a tank by passing a mixture of nitrogen gas and hydrogen gas over an iron catalyst. the reaction is represented by the following equation. n2(g) + 3h2(g) → 2nh3(g) changing all but one experimental condition will affect the amount of ammonia produced. that condition is a) increasing the concentration of both reactants b) changing the temperature within the tank c) decreasing the pressure within the tank. d) increasing only the amount of nitrogen present.

Answers: 1

Answer

Chemistry, 23.06.2019 00:00

If many scientists conduct the same or similar experiments, and all obtain similar results, a can be written, which is a generally agreed-upon statement that explains and predicts how a natural phenomenon works.

Answers: 1

Answer

You know the right answer?

2H2(g)+O2(g) → 2H2O(g) 48. When H2(g) and O2(g) are mixed together in a rigid reaction vessel at 25°...

Questions