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Chemistry
A Level

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

Calcium ions (Ca2+) have the same charge as magnesium ions (Mg2+) but Ca2+ ions have a larger ionic radius (as ionic radius increases down the group). This means Ca2+...

KA
Answered by Keziah A. Chemistry tutor
7556 Views

How can you convert benzene to N-phenylethanamide in 3 steps?

Step 1: Nitration of benzene Benzene + conc. H2SO4 + conc. HNO3 with heat & under reflux --> Nitrobenzene Step 2: Reduction of nitrobenzene Nitrobenzene + tin + con...

KA
Answered by Keziah A. Chemistry tutor
15072 Views

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 the...

JV
Answered by Jenni V. Chemistry tutor
2143 Views

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 = - log10[H+]Within the sodium hydroxide solution, you would observe Na + and OH - ions so in order to find the concentra...

SS
Answered by Simran S. Chemistry tutor
21145 Views

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, i...

Answered by Chemistry tutor
2152 Views

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