Which of the following 0.10M solutions have pH > 7? W. NH4I X. BaCl2 Y. KNO3...

Question

Question

Which of the following 0.10M solutions have pH > 7?

W. NH4I

X. BaCl2

Y. KNO3

Z. NaF

A. W only

B. Z only

C. Y and Z

D. W and X

E. X and Y

science chemistry

Answer 1

Answer #1

The answer is B. Z only.

Only NaF has pH > 7. NaF is the salt of a weak acid (HF) and a strong base (NaOH). Thus, the solution of NaF is slightly basic.

NH4I is the salt of a strong acid (HI) and a weak base (NH3). Thus it's solution is slightly acidic.

BaCl2 is the salt of a strong acid (HCl) with a strong base (Ba(OH)2). Thus, the solution of BaCl2 is neutral.

KNO3 also is the salt of a moderately strong acid(HNO3) and a strong base (KOH). Thus, it's solution is almost neutral.

Answer 2

Similar Homework Help Questions

Which of the following solutions would have an acidic pH at 25 deg ? X. FeBr3(aq)...

Which of the following solutions would have an acidic pH at 25 deg ? X. FeBr3(aq) Y. CH3NH3Cl(aq) Z. NaNO2(aq) A. X only B. X and Y only C. Y only D. Z only E. X and Z only
10. Which of the following mixtures has lower pH a) Equal volumes of 0.10M HCIO, and...

10. Which of the following mixtures has lower pH a) Equal volumes of 0.10M HCIO, and 0.10M NaOH b) Equal volumes of 0.10M HCIO and 0.10M NH Ans: 1. Does the pH increase, decrease or remain same on addition of each of the following a) NH4NO) to NHs solution Ans: b) Na:CO) to NaHCO3 solution Ans: c) NaCIO4 to NaOH solution Ans: 12. Which of the following solutions give a buffer solution when equal volumes are mixed? a) 0.10M NaF...
Aqueous solutions of ________ are basic. Select one: a. NH4I b. NaCl c. NaBr d. NaF...

Aqueous solutions of ________ are basic. Select one: a. NH4I b. NaCl c. NaBr d. NaF e. KI

You have to prepare a pH 3.65 buffer, and you have the following 0.10M solutions available:...

You have to prepare a pH 3.65 buffer, and you have the following 0.10M solutions available: HCOOH, CH3COOH, H3PO4, HCOONa CH3COONa, and NaH2PO4 Part A Which solutions would you use? Check all that apply. HCOOH CH3COOH H3PO4 HCOONa CH3COONa NaH2PO4 Submit Request Answer
Calculate the [H30%], pH, and % ionization for 0.10M solutions of the following weak monoprotic acids....

Calculate the [H30%], pH, and % ionization for 0.10M solutions of the following weak monoprotic acids. a. HCN b. HF c. HBrO d. HN3 2.
9) Which of the following solutions will have the highest concentration of chloride ions? (A)0.10M MgCl2 (3)0.10m N...

9) Which of the following solutions will have the highest concentration of chloride ions? (A)0.10M MgCl2 (3)0.10m NaCl 60.05 Mcally D) 0:10M ALCl3 EAll of the above 10 Which of the following is strong electrolyte in solution (A) Pb MnOy (B) Feliz ☺ cas ) CH3COOH EDNICOU 10 All of the following compounds are soluble EXCEPTI (A) Ag Br (BPb(NO3)₂ (C) Ba(OH), (D) ZnCl2 (E) Cu (Caltz 02 12) Determine the oxidation state of nitrogen in No. A) +4 (B)+3...

7. According to the textbook, which of the following statements is (are) correct? (x) A period...

7. According to the textbook, which of the following statements is (are) correct? (x) A period of hyperinflation is a period of extraordinarily high inflation and there was an obvious case of hyperinflation in Zimbabwe in the early part of the current century. (y) Data on hyperinflation, as illustrated in the textbook, indicates that the money supply growth rate was essentially parallel to the inflation rate during periods of hyperinflation. (z) An extraordinarily high rate of inflation in Germany during...
chans the 7. Determine the pH of the following solutions a. 0.040 M HCL ne b....

chans the 7. Determine the pH of the following solutions a. 0.040 M HCL ne b. 0.040 M KOH C. 0.0087 M HClO2 d. 0.010 M CH3NH2 (methylamine) e. 0.018 M NaF 0.10
7) 2 OY- A) X- ) - - - D) X->Z- Y- 7 Which one of...

7) 2 OY- A) X- ) - - - D) X->Z- Y- 7 Which one of the following sales when dissolved in water, produces the solution with the lowest A) CAC B) KCI с ква D) AICI pH? D) 2.29 C) 3.89 ) What is the prior a 0.20 M R esolution that has the stepwise dissociation constants Kal-13 10-4 and ka21010-117 A) 5.57 B) 4.59 D) 12.00 10) - 9) What is the pH of a solution prepared by...

If the following is a valid statement: w->x->y->z = 12; then C) w, x and...

If the following is a valid statement: w->x->y->z = 12; then C) w, x and y are pointer variables. B) x, y and z are structure components. A) x, y and z are structure variables.A. x, y and z are structure variables. D) A and B statements are correct. E) B and C statements are correct. can someone explain this to me? C++ structures