Question
help on all this please?
1. Which of the following orbital hybridizations can lead to a molecular geometry of square planar? D, sp Consider the following for the next two (2)questions... Triplicate results for the determination of chloride by gravimetric analysis were 21A%. 19 2. what is the average (or mean) chloride value? E. 22.5% C, 21.2% A 192% D, 63.8% B. 21.3% 3. What is the average deviation from the mean? A. 0.90%. 0.10% B. 1.4% of 4. 10.0 mL of an unknown monoprotie acid is titrated with a 0.100M standardized NaoH solution. If 120mL the NaoH solution is needed to reach the endpoint of the titration, what is the molarity (molt) ofte B, 0.170 C. 0.200 D. 5.00 E. 0.113 unknown acid? A, 1.31 titration? 5. Which of the following statements best describes the meaning ofthe codpoint in A. The point where the mLs of base added equals the mLs of acid being titrated. B. The point at the end of the titration. color. C. The point in the titration where the indicator changes D. The point halfway through the titration base and acid are brought E. The point at which equal quantities of together, was the name of the piece of equipment that was used to hold 6. During the acid-base titration experiment, what the standardized NaOH solution? D. syringe An valve column E. pipette B. valve cylinder C. buret
Explanation / Answer
1) Answer is sp2d
2 and 3 answers are right
4)
Given
V1 = 10 ml
M1 = ?
V2 = 17 ml
M2 = 0.1 M
V1 * M1 = V2 * M2
10 ml * M1 = 17 ml * 0.1 M
M1 = 0.17 M Answer is B
5) the point at which stoichometrically equal moles of acid and base are brought together
Answer is E
6) Answer is burette
Answer is C
