What kind of structure do carbon atoms form in an aromatic compound?
1 answer:
You might be interested in
Answer:
Products: C6H5COO-Na+ (aq) + H2O (l)
Explanation:
when the benzoic acid react with sodium hydroxide, the acid part i.e carboxyl group is react with the base and produce ionic compound sodium benzoate (C6H5COO-Na+).
Chemical equation:
C6H5COOH + NaOH → C6H5COO-Na+ + H2O
Chemical reaction with physical states:
C6H5COOH (s) + NaOH (aq) → C6H5COO-Na+ (aq) + H2O (l)
Sodium benzoate is very polar ionic compound and soluble in water. If we add HCl into this solution sodium benzoate will be converted back into benzoic acid.
Properties of benzoic acid:
1. it is colorless solid.
2. it is crystalline in nature.
3. it is aromatic compound with the formula C7H6O2.
4. it is soluble into benzene, alcohol and ether.
5. its molar mass is 122.12 g/mol.
Properties of sodium benzoate:
1. Sodium benzoate is white odorless chemical compound.
2. It is aromatic compound and molecular formula is C7H5NaO2.
3. Its molecular weight is 144.11 g/mol.
4. it is sweet in taste and soluble in water.
5. it is used as preservative because of its antimicrobial properties.
Properties of Sodium hydroxide:
1. it is colorless solid and inorganic compound.
2. it is crystalline in nature.
3. its molar mass is 40 g/mol.
4. its molecular formula is NaOH.
5. its melting point is 318 °C.
Answer: 3M
Explanation: Molarity : It is defined as the number of moles of solute present in one liter of solution.
Formula used :
where,
n = moles of solute = 0.6 moles
= volume of solution in ml= 200 ml
Now put all the given values in the formula of molarity, we get
Therefore, the molarity of solution will be 3M.
Answer:- 23.0 mg
Solution:- Radioactive decay obeys first order kinetics and the first order kinetics equation is:
where, is the initial amount of radioactive substance and N is it's amount after time t. k is the decay constant.
From given information, Original amount, of the radioactive substance is 184 mg and we are asked to calculate the amount N after 15 days. It means, t = 15 days
Half life is given as 5 days. From the half life, we could calculate the decay constant k using the equation:
where, is the symbol for half life. let's plug in the value of half like to calculate k:
Let's plug in the values in the first order kinetics equation and solve it for N:
lnN = 3.136
N = 23.0 mg
So, 23.0 mg of Bi-210 would be remaining after 15 days.