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1. Solution and colligative properties — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistry1. Solution and colligative properties1 Mark
MCQ
How will the viscosity of liquid be affected by the increase in temperature?
  • ✓
    Increase
  • B
    No effect
  • C
    Decrease
  • D
    No regular pattern will be followed
✓

Answer

Correct option: A.
Increase
a
$1\; L$ solution requires $30 \mathrm{m\;mol} \;\mathrm{HCl}$

$250 \;\mathrm{ml}$ sol. will require $7.5 \mathrm{m}\; \mathrm{mol} \;\mathrm{HCl}$

${\text { or } 3.75 \mathrm{m\;mol}\; \mathrm{H}_{2} \mathrm{SO}_{4}}$

${\Rightarrow \frac{3.75 \times 98}{1000} \mathrm{gm} \;\mathrm{H}_{2} \mathrm{SO}_{4}}$

${=0.3675 \;\mathrm{gm} \;\mathrm{H}_{2} \mathrm{SO}_{4}}$

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