1
2
The amount of Koh
It is a double replacement reaction. MgCl2 + H2SO4 ---> MgSO4 + 2HCl
From the balanced equation it can be seen that it takes 2 moles KOH to react with each 1 mole of MgCl2. So, the answer is 2.
Potassium hydroxide is the limiting agent.
1
No reaction
2
1
MgCl2 aq plus Zn s is the oxidation half-reaction for Mg s plus ZnCl2 aq.
Mg + KCl
The amount of Koh
It is a double replacement reaction. MgCl2 + H2SO4 ---> MgSO4 + 2HCl
From the balanced equation it can be seen that it takes 2 moles KOH to react with each 1 mole of MgCl2. So, the answer is 2.
2hcl
Potassium hydroxide is the limiting agent.
The chemical equation is:MgCl2 + Li2CO3 = MgCO3(s) + 2 LiCl