Double Displacement Reaction Lab
A double displacement reaction is a type of chemical reaction in which two compounds react in order to create two new chemicals. The two cations and anions switch places with each other which forms two new compounds. As an example AB+CC can switch to AD+CB.
Both sides of these equations must balance out in order to be neutral. So any pairs of compounds (such as A+B) must have a total balanced charge. In this example A could have a charge of positive 2 (+2) and B could have a charge of negative 2 (-2) in order to balance the equation. When the double displacement reaction occurs the equation must again be balanced.
The example above would not work out in this situation, as it would not be balanced, so the equivalent number of each compound must be chosen in order to balance the charge.
If the charges are, as shown above, it means that 2 D’s will be required in order to balance the +2 charge from A. The same is the case with C. If the equation is not balanced once the compounds have switched, correct numbers of each compound will be required in …show more content…
After a short time, the bubbles disappeared and the liquid turned to be very clear and translucent. In the second reaction between Potassium Iodide and Silver Nitrate there were no bubbles, however the substance turned a yellow-white colour after a few minutes. After a longer wait, the substance started to precipitate and the liquid started to become more solid. In the third reaction of which Barium Chloride and Sodium Sulphate were mixed, bubbles were again visible, however there were very few. After a couple of minutes the mixture turned very cloudy, into a solid white colour. 10 minutes later, the mixture was completely clear and the compounds had very clearly separated into salt and completely translucent liquid. For all of the reactions, the temperature remained
Both sides of these equations must balance out in order to be neutral. So any pairs of compounds (such as A+B) must have a total balanced charge. In this example A could have a charge of positive 2 (+2) and B could have a charge of negative 2 (-2) in order to balance the equation. When the double displacement reaction occurs the equation must again be balanced.
The example above would not work out in this situation, as it would not be balanced, so the equivalent number of each compound must be chosen in order to balance the charge.
If the charges are, as shown above, it means that 2 D’s will be required in order to balance the +2 charge from A. The same is the case with C. If the equation is not balanced once the compounds have switched, correct numbers of each compound will be required in …show more content…
After a short time, the bubbles disappeared and the liquid turned to be very clear and translucent. In the second reaction between Potassium Iodide and Silver Nitrate there were no bubbles, however the substance turned a yellow-white colour after a few minutes. After a longer wait, the substance started to precipitate and the liquid started to become more solid. In the third reaction of which Barium Chloride and Sodium Sulphate were mixed, bubbles were again visible, however there were very few. After a couple of minutes the mixture turned very cloudy, into a solid white colour. 10 minutes later, the mixture was completely clear and the compounds had very clearly separated into salt and completely translucent liquid. For all of the reactions, the temperature remained