Which of the following is a balanced chemical equation for the synthesis of nabr from na and br2? a. 2na + br2 --> 2nabr b. nabr --> na + br2 c. 2nabr --> 2na + br 2 d. 2na + br2 → nabr

A) 2Na + = 2NaBr

Explanation:

As the problem says that you should find the balanced chemical equation for the synthesis of NaBr from Na and , the reactants are Na and and the product is NaBr, so it can be writen as:

Na + = NaBr

Then you shoud balance the equation, it means that you should have the same number of each element in each part of the equation, so if you put a number 2 for the NaBr and the Na, the equation will be balanced:

2Na + = 2NaBr

the dissociation of nickel hydroxide is follows:

the concentration of hydroxide ion is

the equilibrium constant value of nickel hydroxide is = 6.1 * 10^-^1^6 and thus equilibrium equation can be written as:

thus, concentration of ni is 0.23 * 10^-^4 mol /l