Moderate

The slope determined by drawing a right angled triangle drawn with tangent as hypotenuse will be same:

Correct answer: A. With different sizes of triangles drawn

  • A. With different sizes of triangles drawn
  • B. At different points on curve
  • C. At the start and end of curve
  • D. All of these

Explanation

The slope determined by drawing a right angled triangle with the tangent as the hypotenuse will not be exactly the same for different sizes of triangles drawn, but it will approach the same value as the size of the triangle decreases. This is because the slope of the tangent line is the limit of the ratio of the change in y to the change in x as the change in x approaches zero. The right angled triangle can be used to approximate this slope by taking the ratio of the opposite side to the adjacent side, which approaches the slope of the tangent line as the size of the triangle decreases towards zero. Therefore, the smaller the size of the triangle, the closer the approximation will be to the actual slope of the tangent line.

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Reaction kinetics relates reaction rate to concentration, temperature, surface area and catalysts. Questions cover rate laws, reaction order, rate constants, activation energy and the activated complex, including how a catalyst lowers the activation energy without changing the overall energy change or equilibrium position.

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