Answer:
oxygen ion O2-
Explanation:
because it has 8 protons and gave gained 2 electron so O2-.
I think the answer to that is B
<u>The forces between molecules are much stronger than the forces between ions.</u>
➜ True
Answer:
The reaction is zero order with respect to B
Explanation:
The reaction given in the question is -
2A + 3 B ----> 2C + D
From , the above reaction the rate law is written as -
rate = k [ A ]²[ B ]³
where ,
k = rate constant
In the above equation the order is determined by the sum of the powers of the concentrations , i.e. 2 + 3 = 5 order , which never possible ,
Hence , in the question ,
The by changing the concentration of B , the rate does not change .
hence , the rate is independent of the concentration of B .
Therefore ,
The order with respect to B will be zero .
Answer:
57.9 grams .
Explanation:
Ca₃(PO₄)₂ + 3H₂SO₄ → 3CaSO₄ + 2H₃PO₄
1 mole 3 moles 2 moles
149 g of Ca₃(PO₄)₂ = 149 / 310 = .48 moles
86.9 g of H₂SO₄ = 86.9 / 98 = .8867 moles
Here H₂SO₄ is the limiting reagent .
.8867 / 3 = .2955
.2955 moles of Ca₃(PO₄)₂ reacts with .8867 mole of H₂SO₄ to give
2 x .2955 moles of H₃PO₄
H₃PO₄ produced = 2 x .2955 moles
= .591 moles
= .591 x 98 = 57.9 grams .
