NaCl + KNO₃ $$\to$$ NaNO₃ + KCl

CaC₂O₄ + 2HCl $$\to$$ CaCl₂ + H₂C₂O₄

Mg(OH)₂ + 2NH₄Cl $$\to$$ MgCl₂ + 2NH₄OH

Zn + 2AgCN $$\to$$ 2Ag+ Zn(CN)₂

sec^-1, Msec^-1

sec^-1, M

Msec^-1, sec^-1

M, sec^-1

3

6

5

7

$$ - {{d\left[ {{H_2}} \right]} \over {dt}}$$ = $$ - {{d\left[ {{I_2}} \right]} \over {dt}}$$ = $$ - {{d\left[ {{HI}} \right]} \over {dt}}$$

$$ {{d\left[ {{H_2}} \right]} \over {dt}}$$ = $$ {{d\left[ {{I_2}} \right]} \over {dt}}$$ = $$ {{d\left[ {{HI}} \right]} \over {dt}}$$

$${1 \over 2}{{d\left[ {{H_2}} \right]} \over {dt}}$$ = $${1 \over 2}{{d\left[ {{I_2}} \right]} \over {dt}}$$ = $$ - {{d\left[ {{HI}} \right]} \over {dt}}$$

$$ - 2{{d\left[ {{H_2}} \right]} \over {dt}}$$ = $$ - 2{{d\left[ {{I_2}} \right]} \over {dt}}$$ = $${{d\left[ {{HI}} \right]} \over {dt}}$$