The term alum refers to a class of compounds of general, Ask an Expert

Academics

The term "ALUM" refers to a class of compounds of general formula QZ(SO₄)2•12H₂O where Q and Z are two different metals. A 25.00 g sample of a certain alum is heated to drive off the crystal water; the anhydrous residue weighs 14.264 g. Treatment of the residue with excess NaOH precipitates all the Z as Z(OH)₃ which weighs 5.355 g. Identify the two metals.

A. K and Al B. Na and Al C. K and Cr D. K and Fe

View complete question

Chemistry, Academics

Category:- Chemistry
Reference No.:- M91604387

Have any Question?Write your Review or question?

Related Questions in Chemistry

Why do the instructions call for using a saturated solution

Why do the instructions call for using a saturated solution of NaOH rather than one at lower concentration? Why can we ignored in the calculation of the concentration of NaOH?

Explain why the mass of the crucible and anhydrous salt is

Explain why the mass of the crucible and anhydrous salt is less than the mass of the crucible and the hydrate. What is the chemical formula of copper (II) sulfate?

A 1000 g sample of copper metal is heated in a crucible and

A 1.000 g sample of copper metal is heated in a crucible and after 15 minutes themass of the crucible contents is 1.111 g. Calculate the mass of copper (II) oxide that was produced.

Cesium-137 has a half-life of 3017 years the first atomic

Cesium-137 has a half-life of 30.17 years. The first atomic explosion at Trinity Site in New Mexico in 1945 generated significant amounts of cesium-137. It has been 73 years since this detonation. What fraction of the ce ...

In the spring time a background ozone level of 290 ppbv was

In the spring time, a background ozone level of 29.0 ppbv was measured in Edmonton. Convert the mixing ratio of 29.0 ppbv ozone to units of molecules cm-3. Assume a pressure of 1.108 atm and a temperature of 12.5 ºC.

Use valence bond theory to explain the bonding in f2 hf and

Use valence bond theory to explain the bonding in F2, HF, and ClBr. Sketch the overlap of the atomic orbitals involved in the bonds.

228 g of an unknown molecular solute is dissolved in 428

22.8 g of an unknown molecular solute is dissolved in 4.28 moles of 1,2-ethanediol (C2H6O2), causing the freezing point of 1,2-ethanediol to decrease by 1.08 °C. Calculate the molar mass of the solute. For 1,2-ethanediol ...

1 balanced equation for thenbspdouble-replacement

1. Balanced equation for the double-replacement precipitation reaction described, using the smallest possible integer coefficients. A precipitate forms when aqueous solutions of iron(II) chloride and sodium hydroxid ...

Assignment application planned change in a department or

Assignment: Application: Planned Change in a Department or Unit Health care organizations are continuously immersed in change from the emergence of new policies, to promote quality care and improve patient safety to keep ...

A 200 ml sample of 0200 m hbr solution is titratedwith 0200

A 20.0 mL sample of 0.200 M HBr solution is titratedwith 0.200 M NaOH solution. Calculate the pH of the solution after the following volumes of base have been added. (19.8 mL)

4,153,160 Questions Asked
13,132 Experts
2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Recent Questions

Ask Chemistry Expert