![What weight of NaCl is needed to make 2.0 dm³ of a 1.5M solution? [Na = 23, Cl = 35.5]](https://erudites.ng/wp-content/plugins/accelerated-mobile-pages/images/SD-default-image.png)
![What weight of NaCl is needed to make 2.0 dm³ of a 1.5M solution? [Na = 23, Cl = 35.5]](https://erudites.ng/wp-content/uploads/2020/06/past-questions-and-answers.jpg)
A. 116 g
B. 175 g
C. 87 g
D. 58 g
Correct Answer:
Option B – 175 g
Explanation
Molar mass of Nacl = 23 + 35.5 = 58.5 g/mol
Number of moles of Nacl = conc. in mol/dm³ X vol. in dm³
= 1.5 X 2.0 = 3.0 moles
1 mole of NaCl has a weight of 58.5 X 3 = 175.5g
400 Level Social & Political Context of Education Planning and Administration Practice exam questions and detailed…
400 Level Social & Political Context of Education Planning and Administration Practice exam questions and detailed…
400 Level Social & Political Context of Education Planning and Administration Practice exam questions and detailed…
400 Level Social & Political Context of Education Planning and Administration Practice exam questions and detailed…
300 Level Research Methods In Education Practice exam questions and detailed answers. Download the answers in…
300 Level Research Methods In Education Practice exam questions and detailed answers. Download the answers in…
