if anyone need last years jan and june 2014 IAL paper for edexcel send me a message of ur email i ll send it to you as you know tommorw we are doing the R paper as it is roughly the same hardness as international paper
What are the 2 equations when chlorine reacts with sodium hydroxide to make bleach?
2NaOH(aq) + Cl2(g) --> NaOCl(aq) + NaCl(aq) + H2O(l) ...keep in mind that the actual reaction is between OH- and chlorine gas. The sodium ion is a spectator ion. 2OH- + Cl2 --> Cl- + OCl- + H2O It involves the disproportionation of chlorine to form chlorine with two different oxidation numbers, -1 in Cl- and +1 in OCl-.
Yes they do. If it's a positive ion take however many electrons off the config that is the charge If it's a negative ion add on however many electrons the charge is?
1. Electrons are being paired in the np orbital for the group 6 element which causes electron pair repulsion such that the ionisation energy is lower due to a lower attraction. Group 5 has no repulsion
2. Group 3 has an electron occupying the np orbital which is higher in energy than the ns orbital so is easier to remove. Lower IE than grp 2
Thank you I just wanted to get the right wording, good luck
Sample of relative atomic mass mass 121.8 was passed through mass spectrometer It consisted of 60% of 121 and another isotope What is the mass of the other one Along that line
2NaOH(aq) + Cl2(g) --> NaOCl(aq) + NaCl(aq) + H2O(l) ...keep in mind that the actual reaction is between OH- and chlorine gas. The sodium ion is a spectator ion. 2OH- + Cl2 --> Cl- + OCl- + H2O It involves the disproportionation of chlorine to form chlorine with two different oxidation numbers, -1 in Cl- and +1 in OCl-.
Is this the reaction where the NaOH is cold or hot?
Sample of relative atomic mass mass 121.8 was passed through mass spectrometer It consisted of 60% of 121 and another isotope What is the mass of the other one Along that line
Hi guys is there a like specification for chemistry and does anyone know all the keywords we need to know i learnt all the ones my teacher said but not sure if he's gave us the whole key term list
Hi guys is there a like specification for chemistry and does anyone know all the keywords we need to know i learnt all the ones my teacher said but not sure if he's gave us the whole key term list
can you send a picture of the keyword because my teachers dont help us at all
100cm3 is decomposed Same number of moles will be present in 100cm3 of ammonia gas and 100cm3 of nitrogen under same condition So it is now like just moles calculation with equation ratio. From ammonia and nitrogen are in 2:1 ratio from the coefficient of the equation, so you can now deduce the ""number of moles""=volume of nitrogen Same for the hydrogen
Only 100cm3 decomposed so 400cm3 of ammonia still left Add that to the products Posted from TSR Mobile