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Get Full Access to Introductory Chemistry - 5 Edition - Chapter 7 - Problem 109p
Get Full Access to Introductory Chemistry - 5 Edition - Chapter 7 - Problem 109p

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# Solved: A solution contains an unknown amount of dissolved calcium. Addition of 0.112 ISBN: 9780321910295 34

## Solution for problem 109P Chapter 7

Introductory Chemistry | 5th Edition

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Problem 109P

PROBLEM 109P

A solution contains an unknown amount of dissolved calcium. Addition of 0.112 mol of K3PO4 causes complete precipitation of all of the calcium. How many moles of calcium were dissolved in the solution? What mass of calcium was dissolved in the solution?

Step-by-Step Solution:
Step 1 of 3

Solution 109P

Here, we have to calculate the dissolved mass and mole of calcium in the solution.

The balanced chemical equation for the reaction is

3Ca2+(aq) + 2K3PO4(s)--------> Ca3(PO4)2 + 6K+

Thus, 0.112 mol of K3PO4 contains 0.112 mole of (PO42-

Since, from the above equation, it is found that

3 mol of Ca2+ is consumed by 2 mol of K3PO4.

Therefore the required Ca is = = 0.168 mol

Mass of Ca required = 40.078 g/mol x 0.168 mol =6.73 g

Therefore, 0.168 moles of calcium were dissolved in the solution.

6.73 g of calcium were dissolved in the solution.

Step 2 of 3

Step 3 of 3

##### ISBN: 9780321910295

This textbook survival guide was created for the textbook: Introductory Chemistry, edition: 5. Since the solution to 109P from 7 chapter was answered, more than 1001 students have viewed the full step-by-step answer. The answer to “A solution contains an unknown amount of dissolved calcium. Addition of 0.112 mol of K3PO4 causes complete precipitation of all of the calcium. How many moles of calcium were dissolved in the solution? What mass of calcium was dissolved in the solution?” is broken down into a number of easy to follow steps, and 42 words. Introductory Chemistry was written by and is associated to the ISBN: 9780321910295. This full solution covers the following key subjects: Calcium, solution, Dissolved, mass, complete. This expansive textbook survival guide covers 19 chapters, and 2046 solutions. The full step-by-step solution to problem: 109P from chapter: 7 was answered by , our top Chemistry solution expert on 05/06/17, 06:45PM.

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