https://padlet.com/seemakhokher786/p80p3wudgyq1 Made with eyes on the prize en-us 2018-04-23 00:03:20 UTC 2025-04-24 07:03:04 UTC hello@padlet.com https://padlet.com/seemakhokher786/p80p3wudgyq1/wish/254204966 The higher the concentration of the copper sulfate electrolyte, the higher the increase in mass of the copper cathode after 5 minute. This is because the increase in concentration of electrolyte increases the amount of current, which would then increase the rate at which the electrodes are being reduced and oxidised.

Constant variable
The surface area of the electrodes
The time taken before disconnecting the battery from the circuit.
The initial mass of the copper
The energy supplied bh the powersource

Makipulato
The concentration of electrolyte in Mols

Responding variable
The difference in mass of the cathode after the experiment.]]> 2018-04-23 00:22:46 UTC https://padlet.com/seemakhokher786/p80p3wudgyq1/wish/254204966 https://padlet.com/seemakhokher786/p80p3wudgyq1/wish/254205209 If the concentration of the electrolyte (copper sulphate) increases, then the mass of pure copper being extracted at the cathode will increase, because of the positively charged ions will move from the anode to the cathode, resulting in having electrode to increase in size

Constant Variable:
- volume of electrolyte (0.2,0.4,0.6 mol at 300 ml)
- voltage 
- size of electrodes


]]> 2018-04-23 00:24:32 UTC https://padlet.com/seemakhokher786/p80p3wudgyq1/wish/254205209 https://padlet.com/seemakhokher786/p80p3wudgyq1/wish/254205210 Hypothesis: if we increase the voltage (20, 25, 30 V) applied , then reaction of plating and stuff will be obv faster and mass of copper deposit at cathod will increase cuz more ions do stuffs  at same time u knw.. stuffs.. yikes 
 
increase in size of electrode will increase rate of reaction cuz surface area 

Constant variable : size of electrode cuz u knw we aldy changed something 

Voltage cuz explained above

Concentration cuz more ion same shame lame bane Imane





]]> 2018-04-23 00:24:32 UTC https://padlet.com/seemakhokher786/p80p3wudgyq1/wish/254205210 https://padlet.com/seemakhokher786/p80p3wudgyq1/wish/254205313 If the concentration of copper sulfate increase, then the mass of copper retrieved from the cathode will increase because there's higher amount of ions present in the electrolyte and the current flow will increase therefore resulting in more ions being discharged from the cathode. 
Constant variable:
Size of electrodes
Power source (voltage) 
Volume of electrolyte

]]> 2018-04-23 00:25:28 UTC https://padlet.com/seemakhokher786/p80p3wudgyq1/wish/254205313 https://padlet.com/seemakhokher786/p80p3wudgyq1/wish/254205449 2018-04-23 00:26:07 UTC https://padlet.com/seemakhokher786/p80p3wudgyq1/wish/254205449 https://padlet.com/seemakhokher786/p80p3wudgyq1/wish/254205480 If we increase the concentration of the copper sulphate, the mass of the plating object increase, this is because as more ions will be present in the electrolyte, the current will increase and speed up the rate of electron transferring from anode to pure copper cathode and discharge. ]]> 2018-04-23 00:26:21 UTC https://padlet.com/seemakhokher786/p80p3wudgyq1/wish/254205480 seemakhokher786 https://padlet.com/seemakhokher786/p80p3wudgyq1/wish/254205546 to write thhe complete testable hypothesis of the experiment. ]]> 2018-04-23 00:27:00 UTC https://padlet.com/seemakhokher786/p80p3wudgyq1/wish/254205546 sychua7879 https://padlet.com/seemakhokher786/p80p3wudgyq1/wish/254205638 If the concentration of copper sulphate increases, then the time taken for the object being plated decreases because when the solution is more concentrated then more ions present in the copper sulphate, so current increases therefore rate of electron transferrin from the anode to cathode increases. ]]> 2018-04-23 00:27:46 UTC https://padlet.com/seemakhokher786/p80p3wudgyq1/wish/254205638 https://padlet.com/seemakhokher786/p80p3wudgyq1/wish/254205648 If we increase the concentration of the electrolyte then the mass of copper cathode deposited will increase plating increases, this is because of more ions will be present in the electrolyte and the current will be higher thefore resulting in more mass deposited.]]> 2018-04-23 00:27:50 UTC https://padlet.com/seemakhokher786/p80p3wudgyq1/wish/254205648 https://padlet.com/seemakhokher786/p80p3wudgyq1/wish/254205714 If we increase the concentration of the copper sulphate solution, then the rate of electroplating would increase, because there would be more ions in the electrolyte, producing a larger current, and allowing more copper ions to be discharged at the cathode. ]]> 2018-04-23 00:28:13 UTC https://padlet.com/seemakhokher786/p80p3wudgyq1/wish/254205714 https://padlet.com/seemakhokher786/p80p3wudgyq1/wish/254205735 If the concentration of the electrolyte is increased,  then the rate of electroplating will increase as well because a higher number of ions will be present in the electrolyte, which causes the current to increase as well. ]]> 2018-04-23 00:28:22 UTC https://padlet.com/seemakhokher786/p80p3wudgyq1/wish/254205735 https://padlet.com/seemakhokher786/p80p3wudgyq1/wish/254205969 If the concentration of sulphate increases, then the mass at the cathodw after 2 minutes will increase because the increase of copper ions in the electrolyte will result in a faster rate of electron transferred.]]> 2018-04-23 00:29:45 UTC https://padlet.com/seemakhokher786/p80p3wudgyq1/wish/254205969 https://padlet.com/seemakhokher786/p80p3wudgyq1/wish/254205970 If the concentration of copper sulphate I ncreases, the mass of pure copper at cathode increases because more copper ions will be present

Constant
Size of electrodes - If surface area increases, rate of reaction increases.

Power supply - If the power supply increases, rate of reaction increases.]]> 2018-04-23 00:29:45 UTC https://padlet.com/seemakhokher786/p80p3wudgyq1/wish/254205970 https://padlet.com/seemakhokher786/p80p3wudgyq1/wish/254206003 If the electrical current is increased then the rate of oxidation at anode and rate of reduction at cathode will increase because according to the first law of Michael Faraday's law of electrolysis the electricity passed down to the electrolytes is directly proportional to the amount of copper liberated at anode and later reduced at cathode.]]> 2018-04-23 00:30:03 UTC https://padlet.com/seemakhokher786/p80p3wudgyq1/wish/254206003 https://padlet.com/seemakhokher786/p80p3wudgyq1/wish/254206225 If the concentration of the electrolyte increases, then the rate of electroplating would increase because there will be more ions present hence the flow of the current would increase. ]]> 2018-04-23 00:32:18 UTC https://padlet.com/seemakhokher786/p80p3wudgyq1/wish/254206225 https://padlet.com/seemakhokher786/p80p3wudgyq1/wish/254206229 2018-04-23 00:32:24 UTC https://padlet.com/seemakhokher786/p80p3wudgyq1/wish/254206229 https://padlet.com/seemakhokher786/p80p3wudgyq1/wish/254206267 If the concentration of the electrolyte is increased (0.1 mol, 0.2 mol, 0.3 mol, 0.4 mol, 0.5 mol), then the amount of copper from the copper cathode that is deposited is increased, because there would be more ions present in the electrolyte to be deposited.]]> 2018-04-23 00:32:45 UTC https://padlet.com/seemakhokher786/p80p3wudgyq1/wish/254206267 https://padlet.com/seemakhokher786/p80p3wudgyq1/wish/254206312 If the power of the battery is increased by 1 Volt up to 3 Volts, then the rate at which the cathode is electroplated will increase; as it increases the current given off, in turn increasing the oxidation and reduction process.

Variable
Constant:
The concentration of the electrolyte, as this can also affect the rate of the electroplating; as the concentration will affect the ions present.

Manipulated
The voltage of the battery used (1 Volt, 2 Volt, 3 Volt). As this will affect the current, which affects the rate at which ions will flow from the anode and cathode to power the oxidation and reduction process.

Responding
The weight of the cathode after the experiment.]]> 2018-04-23 00:33:12 UTC https://padlet.com/seemakhokher786/p80p3wudgyq1/wish/254206312 https://padlet.com/seemakhokher786/p80p3wudgyq1/wish/254207075 2018-04-23 00:40:21 UTC https://padlet.com/seemakhokher786/p80p3wudgyq1/wish/254207075 https://padlet.com/seemakhokher786/p80p3wudgyq1/wish/254207256 hypothesis: If we increase the concentration of electrolyte then the mass of copper will increase because theres is more copper ions in the solution to attract to the cathode side of the electrolysis, hence rate of electroplating increase

variable: constant : the time for the reaction occur.This is because if we dip the electrode for longer time, it allow more time for the copper ions attract to the cathode and makes the mass of the copper increased, hence making experiment unfair. This can be measured by using stop watch for 7 minutes.]]> 2018-04-23 00:41:49 UTC https://padlet.com/seemakhokher786/p80p3wudgyq1/wish/254207256 https://padlet.com/seemakhokher786/p80p3wudgyq1/wish/254207289 If the concentration of copper sulphate (electrolyte) increases, then rate of electroplating deposition at the cathode will increase. This is because by increasing the concentration, there are more ions present in the electrolyte which means that there are more copper ions available to be transferred to the cathode per second. ]]> 2018-04-23 00:42:08 UTC https://padlet.com/seemakhokher786/p80p3wudgyq1/wish/254207289 https://padlet.com/seemakhokher786/p80p3wudgyq1/wish/254207321 As the concentration of electrolyte increases, the rate of electroplating also increases because there will be more copper ions in the solution which is transferred to the cathode. 

Constant:
Electrical Current
Surface Area of electrodes
Time Given
Initial Mass

]]> 2018-04-23 00:42:26 UTC https://padlet.com/seemakhokher786/p80p3wudgyq1/wish/254207321 https://padlet.com/seemakhokher786/p80p3wudgyq1/wish/254675563 2018-04-24 04:10:54 UTC https://padlet.com/seemakhokher786/p80p3wudgyq1/wish/254675563 https://padlet.com/seemakhokher786/p80p3wudgyq1/wish/254675799 2018-04-24 04:12:48 UTC https://padlet.com/seemakhokher786/p80p3wudgyq1/wish/254675799 https://padlet.com/seemakhokher786/p80p3wudgyq1/wish/254675811 2018-04-24 04:12:54 UTC https://padlet.com/seemakhokher786/p80p3wudgyq1/wish/254675811 https://padlet.com/seemakhokher786/p80p3wudgyq1/wish/254675865 2018-04-24 04:13:19 UTC https://padlet.com/seemakhokher786/p80p3wudgyq1/wish/254675865 https://padlet.com/seemakhokher786/p80p3wudgyq1/wish/254675879 2018-04-24 04:13:23 UTC https://padlet.com/seemakhokher786/p80p3wudgyq1/wish/254675879 https://padlet.com/seemakhokher786/p80p3wudgyq1/wish/254675892 2018-04-24 04:13:28 UTC https://padlet.com/seemakhokher786/p80p3wudgyq1/wish/254675892 https://padlet.com/seemakhokher786/p80p3wudgyq1/wish/254675927 2018-04-24 04:13:50 UTC https://padlet.com/seemakhokher786/p80p3wudgyq1/wish/254675927 https://padlet.com/seemakhokher786/p80p3wudgyq1/wish/254675985 2018-04-24 04:14:23 UTC https://padlet.com/seemakhokher786/p80p3wudgyq1/wish/254675985 https://padlet.com/seemakhokher786/p80p3wudgyq1/wish/254676011 2018-04-24 04:14:36 UTC https://padlet.com/seemakhokher786/p80p3wudgyq1/wish/254676011