Measuring the rate of reactions

• equation for rate of reaction ?

  amount of reactant used / time
• what are the 3 examples of ways that the rate of reaction can be measured ?

  precipitation, change in mass, the volume of gas given off
• label this precipitation diagram

  A) mix 2 see through solutions in beaker

  B) put flask on piece of paper with mark on it

  C) use a stopwatch and time untill you cant see the cross

  
• label this change in mass diragram

  A) as gas is released lost of mass measured with balance

  B) reaction finished when reading on balance stop changing

  
• label this volume of gas diagram

  A) the more gas given off , the faster the reaction

  B) the reaction is finished when no more gas is made