Chemistry Bond Angle and Acid Strength Quiz
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Questions and Answers

What is the charge on the small ball attached to the 100 cm long string?

  • 6 × 10^-6 C (correct)
  • 1.5 × 10^-6 C
  • 2 × 10^6 C
  • 3 × 10^-6 C

    • What is the mass of the small ball attached to the string?

  • 1.2 g
  • 1.5 g
  • 0.6 g (correct)
  • 0.8 g

    • In what direction is the electric field in which the charged ball is placed?

  • Horizontal (correct)
  • Diagonal
  • Circular
  • Vertical

    • What is the approximate frequency of the system described in the text?

    <p>0.10 Hz</p> Signup and view all the answers

    What is the length of the rod to which the two identical balls are attached?

    <p>$2a$</p> Signup and view all the answers

    What is being calculated when determining the angular velocity of the rod turning through 90°?

    <p>Rotational motion of the system</p> Signup and view all the answers

    What is the approximate De-Broglie wavelength of particle Y?

    <p>5.3 Å</p> Signup and view all the answers

    If the De-Broglie wavelength of particle X is 1Å, what is its velocity?

    <p>High</p> Signup and view all the answers

    What is the wave number of the first line in the Balmer series for hydrogen (H)?

    <p>15200 cm–1</p> Signup and view all the answers

    If the wave number of the first line in the Balmer series for hydrogen is 15200 cm–1, what is the wave number of the second line in the Balmer series for Be3+?

    <p>243000 cm–1</p> Signup and view all the answers

    Which particle has a smaller De-Broglie wavelength, X or Y?

    <p>Particle Y</p> Signup and view all the answers

    How does the wave number vary in the Balmer series as we move from H to Be3+ ions?

    <p>Increases</p> Signup and view all the answers

    What is the correct order of acid strength among Al2O3, SiO2, P2O5, and SO3?

    <p>Al2O3 &lt; SiO2 &lt; P2O5 &lt; SO3</p> Signup and view all the answers

    In the compound X-P-X, where X is a halogen atom, which sequence of bond angles is incorrect?

    <p>OPBr3 &gt; OPCl3 &gt; OPF3</p> Signup and view all the answers

    If a particle X has a de-Broglie wavelength of 1Å, what can be deduced about particle Y with a mass 25% of X and velocity 75% of X?

    <p>Y will have a smaller de-Broglie wavelength than X</p> Signup and view all the answers

    Which of the following compounds has the strongest acid character?

    <p>SO3</p> Signup and view all the answers

    What is the de-Broglie wavelength of a particle Y if it has a mass 25% of that of particle X and a velocity 75% of that of X, where X has a de-Broglie wavelength of 1Å?

    <p>~0.5Å</p> Signup and view all the answers

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