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Why does calcium nitrate decompose in a similar way to magnesium nitrate, but require a higher temperature for decomposition?

Calcium ions (Ca 2+ ) have the same charge as magnesium ions (Mg 2+ ) but Ca 2+ ions have a larger ionic radius (as ionic radius increases down the group). This means Ca 2+ has a lower charge density than Mg...
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Answered by Keziah A. • Chemistry tutor
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How can you convert benzene to N-phenylethanamide in 3 steps?

Step 1: Nitration of benzene Benzene + conc. H 2 SO 4 + conc. HNO 3 with heat & under reflux --> Nitrobenzene Step 2: Reduction of nitrobenzene Nitrobenzene + tin + conc. HCl with heat & under ref...
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Answered by Keziah A. • Chemistry tutor
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How does ionisation energy vary across a period in the periodic table?

Ionisation energy generally increases across a period in the periodic table. This is because across a period, one more proton is added to the nucleus. This increases the quantity of positive charge so there ...
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Answered by Jenni V. • Chemistry tutor
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What is the pH of 0.10 mol.dm^(-3) sodium hydroxide solution, NaOH?

To calculate the pH of a solution/compound, we can use the equation: pH = - log 10 [H+]Within the sodium hydroxide solution, you would observe Na + and OH - ions so in order to find the concentration of H+ i...
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Answered by Simran S. • Chemistry tutor
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How do I tackle Kc questions?

I like to use something called the ICE method:I = initial moles C = Change in molesE = equilibrium moles once you draw the ICE table with the formula on top you simply fill in the blanks. Now remember, in te...
Answered by • Chemistry tutor
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