Home
Class 11
CHEMISTRY
How many grams of phosphoric acid would ...

How many grams of phosphoric acid would be needed to neutralise `100 g` of magnesium hydroxide? (The molecular weight are: `H_(3)PO_(4) = 98` and `Mg(OH)_(2) = 58.3)`

A

`66.7 g`

B

`252 g`

C

`112 g`

D

`168 g`

Text Solution

Verified by Experts

The correct Answer is:
C
`3 Mg (OH)_(2) + 2H_(3) PO_(4) rarr Mg(PO_(4))_(2) + 3H_(2) O`
`(3 xx 58.3)/(2 xx 98) = (100)/(W), :. W = 112 g`
Promotional Banner

Similar Questions

Explore conceptually related problems

How many terms of G.P. 3, 3^2, 3^3, … are needed to give the sum 120?

How many grams of CH_(3)OH should be added to water to prepare 150 ml solution of 2.0 M CH_(3)OH ?

How many grams of concentrated nitric acid solution should be used to prepare 250 mL of 2.0 M HNO_(3) ? The concentrated acid is 70% HNO_(3) .

Fill in the blanks. a. The equivalent weight of NaHCO_(3) is ……..and of SO_(2) is ……… b. 2 mol of 50% pure Ca(HCO_(3))_(2) on heating forms 1 mol of CO_(2) . The % yield of CO_(2) is …….. c. 5 g of K_(2) SO_(4) was dissolved in 250 mL of solution. The volume of this solution that should be used so that 1.2 g of BaSO_(4) be precipitated fromk BaCl_(2) is ....... (molecular mass of K_(2) SO_(4) = 174 and BaSO_(4) = 233 ) d. The residue obtained on strongly heating 2.76 g Ag_(2) CO_(3) is ........ [Ag_(2)CO_(3) overset(Delta)rarr Ag + CO_(2) + O_(2)] Atomic mass of Ag = 108

How many grams of Cu(NO_(3))_(2) would you need to take to get 1.00 g of copper? Cu = 63.5, N = 14, O = 16 .

How many moles of magnesium phosphate, Mg_3(PO_4)_2 , will contain 0.25 mole of oxygen atoms ?

How many g of S are required to produce 100 mol and 100 g H_(2) SO_(4) separately?

How many terms of the G.P. 3,(3)/2,3/4 ..........are needed to give the sum (3069)/512 ?