The Reaction of NO Gas with H₂ Gas Has the Following

question 133

Multiple Choice

The reaction of NO gas with H₂ gas has the following rate law: Rate  k[H₂][NO]². A proposed mechanism is: Step 1: Step 2: What is the molecularity of steps 1 and 2, and which step is the slow, or rate-determining, step?

• A)2; 2; step 1
• B)4; 4; step 2
• C)3; 2; step 1
• D)3; 2; step 2
• E)Cannot be determined from the information provided.

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Definitions:

Material Price Variance

The difference between the actual cost of materials used to produce a product and the standard or expected cost.

Direct Material Variances

The difference between the actual cost of direct materials used in production and the standard cost, indicating efficiency in using materials.

Favorable Variances

Variances that occur when actual costs are less than standard or budgeted costs, or actual revenues exceed expectations, benefiting the company's financial performance.

Unfavorable Variances

Situations where actual costs are higher than planned or budgeted costs, or actual revenue is lower than expected.